214 Answered Questions for the topic Velocity

10/29/17

After how many seconds is their velocity 70 ft/s?
The velocity of a sky diver t seconds after jumping is given by v(t) = 80(1 − e−0.02t), measured in feetper second. 
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10/28/17

A bullet was fired with a 10 m/s horizontal velocity and a 29.4 m/s vertical velocity. The total time of the bullet's flight was 6 secs.
What was the maximum height and maximum range of the bullet? I got the answers of Δy=44.1 m And Δx= 60.0 m
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10/23/17

The vertical direction in a projectile problem can be analyzed as a:
(a) constant velocity problem (b) free fall problem
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10/23/17

The acceleration due to gravity and the vertical velocity are in the same direction causing the vertical velocity to:
(a) increase (b) remain the same (c) decrease
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10/01/17

Help on Physics kinematic problems please?
1. Car 1 moves eastward with a constant speed of 20 m/s. Car 2, at rest on the side of the road, accelerates at 2 m/s squared to the east at precisely the instant Car 1 is beside it. How long does... more
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Velocity

09/18/17

What car should you buy
You are trying to buy a new car and want the one with the greatest acceleration. Car A can go from 0 to 60 mph in 3.8 seconds. Car B can travel a distance of 12.4 m in 1.94 swhen accelerating from... more
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Velocity

09/18/17

Fine the velocity
The Super High Performance Stomp Rocket™ claims that it can launch a rocket straight up into the air to a height of 400 feet. Find the total time of the rocket’s trajectory (ttotal), the initial... more
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Velocity

09/17/17

A car travels on a straight road fr 10 km at 10 m/s. It then speeds up and travels another 10 km at 30 m/s. What is the average speed for the entire 20 km trip
A car travels on a straight road fr 10 km at 10 m/s. It then speeds up and travels another 10 km at 30 m/s. What is the average speed for the entire 20 km trip?   Average speed is the total... more
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09/09/17

This is independent of what variable?
d=Vi t 1/2 at^2 is independent of what variable?   (1)a (2)Vi (3)Vf (4)d
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Velocity Science Physics Graph

09/09/17

Velocity-time graph?
Finish this statement/phrase: "What does a constant slope mean in a velocity-time graph? Slope means acceleration. Therefore, if we have a constant slope, we have a constant ______."   (1)... more
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09/09/17

The area of an acceleration-time graph is:
The area of an acceleration-time graph is: (1) time (2) velocity  (3) acceleration (4) displacement 
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09/09/17

The area of a velocity-time graph is:
the area of a velocity-time graph is: (1) velocity  (2) acceleration  (3) displacement  (4) time
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Velocity Science Physics Graph

09/09/17

constant velocity is represented by:
Constant velocity is represented in a  velocity-time graph by: (1) a horizontal line with no slope  (2) a curve  (3) a line of constant slope 
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09/09/17

When velocity and acceleration are in the opposite direction the motion is...
when velocity and acceleration are in the opposite direction, the motion is: (1) slowing down  (2) speeding up  (3) remaining the same 
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09/09/17

Velocity; how far will the car travel? (Read)
A car traveling north at an average velocity of 65 km/hr. How far will it travel at 180 minutes? **Make sure to include all proper units and labels in final answer Given: Average velocity= 65 km/hr... more
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09/01/17

Laws of Motion related doubt
A uniform chain of length 'l' is placed on a smooth horizontal table, such that half of its length hangs over one edge. It is released from rest, the velocity with which it leaves the tables is... more
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Velocity Science Physics Light

08/25/17

Doppler Shift of Light
A hydrogen line in a star's spectrum has a frequency of 6.17*10^14 Hz when stationary. In Rigel's spectrum, it is shifted downward by 4.26*10^10 Hz. What is Rigel's velocity relative to us?
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Velocity Physics Mass Energy

08/21/17

Energy in Simple Harmonic Motion help?
A .500 kg mass is oscillating on a spring with k= 330 N/m. The total energy of it's oscillation is 3.24 J. What is the speed of the mass when it is .100 m from the EP?
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Velocity

08/20/17

Upwards velocity using quadratic equations
A basketball player shoots at the basket from a startingheight of 6 feet and an upwards velocity of 20 feet per second. Determine how long ittakes for the shot to drop through the basket, which is... more
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07/29/17

rates of change
You hit a golfball upward with your pitching wedge. The position function of the ball is s(t)=-3t^2+30t where the origin is at ground level and the positive direction is vertically up. (distance is... more
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07/28/17

Rate of Change
An object is moving in a straight line from a fixed point. The displacement s(in meters) is given by s=-2t^2+28t+45, t is greater than or equal to 0, where t is in seconds.    1. Describe the... more
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Velocity Mass

07/11/17

identify mass, velocity, and more
Ball A, with a mass of 20 kilograms, is moving to the right at 20 meters persecond. At what velocity should ball B, with a mass of 40 kilograms, move sothey both come to a standstill upon... more
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Velocity Motion

05/11/17

A train is moving with velocity of 54 kmph is acceleratedesigned so that it's velocity becomes 72 kmph in 15 seconds . Find the acceleration of the train.
It's a numerical of physics of chapter motion please solve it .
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05/08/17

Jacob kicks a soccer ball off the ground and into the air, with a velocity of 33 feet per second.
Jacob kicks a soccer ball off the ground and into the air, with an initial velocity of 33 feet per second. Using the formula H(t) = -16t + vt + s, what is the maximum height the soccer ball reaches? 
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Velocity

04/11/17

a football player kicks a ball at an angle of 30 degrees with the initial velocity of 64 feet per second. Its height t seconds later in h(t)=32t-16t^2 feet
a.) find v(t), the vertical velocity of the ball at time t. Give units  b.) find v(1) and explain what is happening to the ball at this time. What is the height of the ball at this time? c.) When... more
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