197 Answered Questions for the topic AP physics

09/19/17

#### a ball is dropped off a very tall canyon ledge.Gravity accelerates the ball at 9.8 m/s^2. How fast is the ball traveling after 5 seconds

a ball is dropped off a very tall canyon ledge.Gravity accelerates the ball at 9.8 m/s^2. How fast is the ball traveling after 5 seconds

09/10/17

#### I'm thinking the answer is Vf or t but I'm not sure..

Rewrite    Vf = Vi+a delta t    by plugging in  2 delta d / Vi+Vf    For    Delta t.   when you do so you will get the equation in the question below:   So tell me, Vf^2=Vi^2+2ad is... more

09/10/17

#### Would the answer be t?

Vf^2=Vi^2+2ad is independent of what variable? (1) Vf (2) v (3) t (4) a

09/09/17

#### Independent of what variable?

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

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

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

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

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

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

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

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

09/09/17

#### Is final velocity a vector or scalar?

A ball starts from rest at point A and rolls .9 meters east to point B with an average velocity of 2 m/s. What was the velocity of the ball at B? Given: Vi=0 m/s  d (displacement)= .9m... more

08/21/17

#### What average speed do you need to get you to the church on time?

ap physics question;   On your wedding day you leave for the church 34 minutes before the ceremony is to begin, which should be plenty of time since the church is only 12.0 miles away. On the... more

07/21/17

A 3400 kg plane flying at a constant speed of 170 m/s is to do a vertical loop. What is the radius of the loop if the pilot feels three times his normal weight when he is at the top of the loop?

07/21/17

At what angle relative to the horizontal should a 52 m curve be banked if the road is covered with ice (no friction) to prevent the car from slipping when traveling at 12 m/s? (use g = 9.8 m/s2)

07/14/17

#### Question is below please answer asap (this is a conservation of momentum problem that I'm struggling with)

A large platform is initially at rest on a smooth frictionless surface. A dog on the platform starts running toward the east. The mass of the dog is one-half the mass of the platform. When the dog... more

07/13/17

#### if a crate is being moved at a constant velocity on a rough surface with an applied force at an angle what is the net work?

im also wondering if the work done by normal force and gravity are both 0 since the crate is only moving in the horizontal

07/11/17

#### A pendulum is pulled to a height of 1.28 m above the lowest position and released. What is its speed at the level of the lowest position?

possible answers include    5.01 m/s 9.81 m/s 19.6 m/s 25.0 m/s none of these

07/11/17

A roller coaster car starts out at rest at the top of the first hill and reaches a speed of 10 m/s at the bottom of the hill. What is its speed when it is half-way down? Assume that the track is... more

07/10/17

A 500 kg roller coaster car crests a 20 m high hill at a speed of 10 m/s. It then rolls down the other side, all the way to ground level, and climbs a second hill. What is the speed of the car when... more

07/10/17

A pendulum, 2.0 m in length, is released with a push when the string is at an angle of 25° from the vertical. If the initial speed of the pendulum is 1.2 m/s, what is its speed at the bottom of the... more

07/09/17

#### A car is moving up a hill at constant speed. Which statement below is correct?

possible answers below  none of the above its potential energy is constant its total mechanical energy is constant work is being done by a non-conservative forc

07/09/17

#### Question is below b/c its length does not fit into the summary (please answer asap)

A 6.00 kg block slides down a 3.40 m long inclined plane. The speed of the block at the bottom is 5.40 m/s. If the height of the plane is 2.00 m, what is the work done by friction?   Im confused... more

07/06/17

#### Physics problem - pleaseeeee need help!

I'm editing this problem because I was able to get a couple of the answers, but I still need help on the rest. An electromagnatic wave is traveling in vacuum with frequency 7 x 1014 Hz. The wave... more

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