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115 Answered Questions for the topic Acceleration

11/06/15

find the external force, acceleration of the two masses, find the tension of the rope of the two masses

A block of mass 2.21753 kg lies on a friction- less table, pulled by another mass 3.08244 kg under the influence of Earth’s gravity. The acceleration of gravity is 9.8 m/s2 . What is the magnitude... more

11/06/15

answer in m/s2

A block of mass 4.29 kg lies on a frictionless horizontal surface. The block is connected by a cord passing over a pulley to another block of mass 3.61 kg which hangs in the air, as shown on the... more
Acceleration Physics Meters

11/01/15

What was the cannonball's final speed when it hit the soldier?

If a cannonball was shot off 20 meters away from a soldier, and it's acceleration was 5m/s^2. What was the cannonball's final speed when it hit the soldier?   Hint: The Initial speed was... more
Acceleration Work Time

10/30/15

Car have mass m,its engine delivers power P.what's the minimum time in which car can be accelerated from rest to speed v

A car of mass m has an engine which can deliver power P.The minimum time in which car can be accelerated from rest to a speed v is(a) (mv^2)/2P(b) Pmv^2(c) 2Pmv^2(d) (mv^2)P/2
Acceleration Physics Time

10/15/15

Physics Help Please?

Benjamin fires an arrow from a castle wall 10m high. It leaves the bow with a speed of 40m/s directed 37° above the horizontal.   a) Find the initial velocity components   b) Find the maximum... more
Acceleration

10/05/15

the speed of a train increases from 100 km/hr to 250 km/hr in five minutes. what is its acceleration?

Acceleration formula
Acceleration Physics

10/05/15

What is the car's average acceleration?

A car accelerates from 23m/s to 7m/s in 4 seconds. What is the car's average acceleration?   Multiple Choice: A) -4m/s^2 B) 5.75 m/s^2 C) 1.75m/s^2 D) 4 m/s^2   I know the answer is A)... more
Acceleration Physics

10/05/15

As a ball falls, its acceleration is what?

As a ball falls, its acceleration is...   Multiple Choice: A) positive B) negative C) it has no acceleration   I know the answer is A) positive. But why? Please explain.
Acceleration Physics Speed

10/05/15

Which of the following carts is experiencing an unbalanced force?

Which of the following carts is experiencing an unbalanced force?   Multiple Choice: A) A cart that is accelerating B) A cart that is traveling at a constant speed C) A cart that is at... more
Acceleration Physics Mass

10/05/15

The same force will give a mass of 3M an acceleration of what?

A force of F newtons will give an object with a mass of M an acceleration of A. The same force will give a mass of 3 M an acceleration of: Multiple choice:a) 1/3 Ab) 3 Ac) Ad) 1/9 A I know the... more
Acceleration Physics Mass

10/05/15

The same force will give a mass of 3 M an acceleration of what?

A force of F newtons will give an object with a mass of M an acceleration of A. The same force will give a mass of 3 M an acceleration of:   Multiple choice: a) 1/3 A b) 3 A c) A d) 1/9... more
Acceleration Math Calculus

10/04/15

The equation of motion of a particle is s = t^3 - 3t, where is in meters and is in seconds.

Find the acceleration when the velocity is 0.   I know the function for acceleration is 6t so I thought the answer must be 0. However, the back of the book says the answer is 6. Is that an error?
Acceleration Physics Mass

09/18/15

The acceleration of a 500kg mass when a 4N force is applied to it is:

The acceleration of a 500kg mass when a 4N force is applied to it is:
Acceleration Physics

09/18/15

The force required to accelerate a 20kg mass at 6m/s^2 is:

The force required to accelerate a 20kg mass at 6m/s^2 is:
Acceleration Physics Distance

09/10/15

Use your knowledge of acceleration, average speed, and running starts to explain why it happens?

A common track event is the 4x100m relay, where each athlete each run 100m and passes a baton to the next runner who then runs 100m, and so on until all four runners have gone. The runners... more
Acceleration Physics Time

09/10/15

Driving at 75m/s, you hit the brakes on your new car, accelerating at a rate of -20m/s. How long will it take the car to come to rest?

Driving at 75m/s, you hit the brakes on your new car, accelerating at a rate of -20m/s. How long will it take the car to come to rest?   Show work (Acceleration or Average Speed)
Acceleration Physics Time

09/10/15

Riding your bike, you can accelerate at a rate of 1.5m/s^2. If you accelerate for 17 seconds, how much speed will you gain?

Riding your bike, you can accelerate at a rate of 1.5m/s^2. If you accelerate for 17 seconds, how much speed will you gain?   (s) = seconds   SHOW WORK (Average Speed or Acceleration)
Acceleration Physics Time

09/10/15

Riding your bike, you can accelerate at a rate of 2m/s^2. If you start from rest, how long will it take to reach a speed of 20m/s?

Riding your bike, you can accelerate at a rate of 2m/s^2. If you start from rest, how long will it take to reach a speed of 20m/s?   Show work (Average Speed or Acceleration)
Acceleration Physics Time

09/10/15

Your new car can go 0-90 m/s in 5 seconds. What is your car's acceleration?

Your new car can go 0-90 m/s in 5 seconds. What is your car's acceleration?   Show work (Average Speed or Acceleration)
Acceleration Velocity Speed

08/19/15

which describes motion in which the person or object is accelerating?

a. a bird flies straight from a tree to the ground without changing speeds b. a dog walks at a constant speed along a straight sidewalk c. a girl runs along a straight path the same distance each... more
Acceleration Physics Newton

04/15/15

True or false: Newton's laws apply only to reference frames that are not accelerating.

True or false: Newton's laws apply only to reference frames that are not accelerating.
Acceleration Physics

04/15/15

A sinker on a string travels in a circle of radius1.00 m with a constant speed of 2.75 m/s. What is its acceleration?

A sinker on a string travels in a circle of radius1.00 m with a constant speed of 2.75 m/s. What is its acceleration?

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