12,727 Answered Questions for the topic physics

Physics

09/29/23

Physics Problem: slopes and angles

A skier goes down a slope with an acceleration of 4.1 m/s^2. If we ignore friction and air resistance, wat is the angle of the slope with respect to the horizontal direction?
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Physics

09/29/23

PHYSICS EXAMPLE-test tomorrow need help please!
At time t=0 s, a runner has a velocity vector, Vi--> with components Vx=2.3 m/s and Vy=0.12 m/s. At time t=2.2 s, the same runner has a velocity vector Vf--> with components Vx=2.3 and... more
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Physics

09/29/23

Physics problem question
A football kicker kicks a football with an initial speed of 22 m/s at an angle of 37 degrees above horizontal. Ignoring air resistance, how high did the ball go?
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Physics

09/29/23

Reaction Time Physics│Please Help!
1.A ball rolls down a 4 m ramp in 8 s. What is the average velocity of the ball?2.A car is sitting at a red light. When the light turns green the car accelerates at 3 m/s^2. How long will it take... more
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Physics

09/28/23

With what minimum horizontal velocity must the cliff divers leave the top of the cliff if they are to miss the rock? Answer in units of m/s.
Cliff divers at Acapulco jump into the sea from a cliff 37.1 m high. At the level of the sea, a rock sticks out a horizontal distance of 11.39 m. The acceleration of gravity is 9.8 m/s 2 . With... more
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Physics

09/28/23

The acceleration of gravity is 9.81 m/s 2 . What was the cat’s speed when it slid off the table? Answer in units of m/s.
A cat chases a mouse across a 1.7 m high table. The mouse steps out of the way, and the cat slides off the table and strikes the floor 1.4 m from the edge of the table. The acceleration of gravity... more
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Physics

09/28/23

The acceleration of gravity is 9.8 m/s 2 . By how much vertical distance does the ball clear the crossbar? Answer in units of m.
To win the game, a place kicker must kick a football from a point 19 m (20.7784 yd) from the goal, and the ball must clear the crossbar, which is 3.05 m high. When kicked, the ball leaves the... more
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Physics Calculus

09/28/23

Ap Physics 1 help with stacked graphs , Constant Acceleration model

While cruising along a dark stretch of highway with the cruise control set at 25 m/s (≈55 mph), you see, at the fringes of your headlights, that a bridge has been washed out. It takes 0.50 s from... more
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Physics

09/27/23

An 1450 kg automobile has springs with k= 1.2×10*4 N/m.
An 1450 kg automobile has springs with k= 1.2×10*4 N/m. One of the tires is not properly balanced; it has a little extra mass on one side compared to the other, causing the car to shake at certain... more
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Physics

09/27/23

Reaction Time Physics│Please Help!
A rocket is fired straight up with an initial velocity of 400m/s. How long will it take the rocket to reach the maximum height AND what is the maximum height.
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Physics

09/27/23

How far apart are they after 1.4 h? Answer in units of m.
Two airplanes leave an airport at the same time. The velocity of the first airplane is 740 m/h at a heading of 63.4 ◦ . The velocity of the second is 650 m/h at a heading of 184◦ . How far apart... more
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Physics

09/27/23

What does negative acceleration mean?
An object moving in a straight line has an acceleration of -2 m/s2. Is the object speeding up, slowing down, or is more information needed? Give a complete explanation with examples.
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Physics

09/27/23

Physics Velocity Question
A cannon tilted upward at θ = 27 degrees fires a cannonball with a speed of 91 m/s. At that instant, what is the component of the cannonball’s velocity parallel to the ground?(I know how to do... more
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Physics

09/27/23

Physics distance problem
(I was not sure how to approach this because I have not done problems where the object is going up the hill)A car traveling at 37 m/s runs out of gas while traveling up a 9.0 degree slope. How far... more
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Physics

09/27/23

PHYSICS PROBLEMS-Vectors (I am very confused)
(I do not really understand how problems like this work, any explanation would be appreciated)Find the x- and y-components of the vector d→ = (4.0 km, 29 degrees left of +y-axis).Express your... more
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Physics

09/26/23

What is the new speed of the aircraft with respect to the ground? Answer in units of mph.
A jet airliner moving initially at 687 mph (with respect to the ground) to the east moves into a region where the wind is blowing at 730 mph in a direction 70◦ north of east. What is the new speed... more
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Physics

09/26/23

Physics problem-help needed, not sure what equations to use.
Small-plane pilots regularly compete in "message drop" competitions, dropping heavy weights (for which air resistance can be ignored) from their low-flying planes and scoring points for having the... more
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Physics

09/26/23

PHYSICS HOMEWORK QUESTION: Not sure how to solve this.
A rifle is aimed horizontally at a target 58 mm away. The bullet hits the target 2.5 cm below the aim point.What was the bullet's flight time? Neglect the air resistance.What was the bullet's speed... more
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Physics

09/26/23

PHYSICS HOMEOWORK QUESTION-Please help I am confused!
In the Soapbox Derby, young participants build non-motorized cars with very low-friction wheels. Cars race by rolling down a hill. Assume that the track begins with a 63-ftft-long (1 mm =... more
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Physics

09/26/23

project for school
Get a straw and fill a drinking glass with water, then complete the following steps. During each step, observe the behavior and properties of this liquid matter as you interact with it. Finally,... more
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Physics

09/26/23

How long after the blue ball is thrown are the two balls in the air at the same height?
A blue ball is thrown upward with an initial speed of 21.4 m/s, from a height of 0.7 meters above the ground. 2.6 seconds after the blue ball is thrown, a red ball is thrown down with an initial... more
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Physics Math

09/25/23

How do you calculate the weight of load needed on top of underground water tanks so that it will not float
Example you have a cube tank (1 cubic meter) and needed to bury the tank. How much weight needed on top so that it will not float in case there is flood.
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Physics

09/24/23

Solving 2-D Motion Vectors and 2-D Kinematics
A lunar probe is moving 1,670 m/s at a 73.0* degree angle. It needs to land on the moon 3.71x10^8m away in a 46.0* direction in 8.64x10^4s. What is the direction of the acceleration that the engine... more
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Physics

09/24/23

Physics AP12d Kinematics

 An air-to-ground rocket is fired horizontally from an A-10 attack aircraft flying at 200 m/s. Immediately after leaving the jet, the rocket accelerates horizontally at a rate of 50.0 m.s^2 as it... more
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Physics

09/24/23

Physics question

If a measurement of the width of a table comes out to be 50 cm and you can tell that the maximum error in the measurement is 0.5 cm, the percent error in the measurement is about?
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