# Physics -Impulse- part 2

1) A 0.50 kg object is at rest. A 3.00 N force to the right acts on the object during a time interval of 1.50 s
a) What is the impulse?
b) What is the velocity of the object at the end of this time interval?

2) A 2250 kg car traveling to the west at 20.0 m/s slows down uniformly and comes to a stop.
a) What is the impulse delivered to the car?
b) How long it would take the car to come to a stop if the force on the car is 8450 N to the east?

3) A 2.5 kg ball strikes a wall with a velocity of 7.5 m/s to the right. The ball is in contact with a wall for 0.25 s.
a)What is the change in momentum?
b) What is the impulse delivered?
c) What is the constant force exerted on the ball by the wall?

4) A 0.15 kg baseball moving at +26 m/s is slowed to a stop by a catcher who exerts a constant force of -390 N.
a) What is the change in momentum?
b) What is the impulse delivered?
c) how long does it take this force to stop?

.need help!! :)

>>formula's<<
P=w/t
P=energy/time
P= Fd/t

Thank You!! :) <3 i really need help :)

1. 👍 0
2. 👎 0
3. 👁 778
1. fhhnb

1. 👍 0
2. 👎 0

## Similar Questions

1. ### physic

A force F⃗ = 12 N i^ − 10 N j^ acts on an object. How much work does this force do as the object moves from the origin to the point r⃗ = 13 m i^ + 11 m j^?

asked by kolam on July 13, 2013
2. ### physics

Which of the following statements about work is or are true? (More than one statement may be true.) A. Negative net work done on an object always reduces the object's kinetic energy. B. If the work done on an object by a force is

asked by andrea on February 22, 2011
3. ### physical

staring from rest, a 3.5 kg object is acted upon by an unbalanced force and acquires a speed of 14.0 m/s after moving a distance of 35 m. find (a) the acceleration of the object, (b) the unbalanced force acting on the object, and

asked by john on September 11, 2017
4. ### Physics

Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. The work done on object A is 500J. After the force pulled each object, object A moves twice as

asked by Tim on December 9, 2012
5. ### physics

true or false If a net force acts on an object, the object's speed will change. An object's velocity will change if a net force acts on the object. If two object have the same acceleration, they are under the influence of equal

asked by molly on October 4, 2010
1. ### physics...PLZ HELP! =)

A constant force acts on a moving object. The object makes a fixed magnitude of displacement in some direction. In general, in what direction is the displacement that will result in the object traveling with the least kinetic

asked by Elizabeth on October 16, 2012
2. ### physics

A 2.0-N force acts horizontally on a 10-N block that is initially at rest on a horizontal surface. The coefficient of static friction between the block and the surface is 0.50. What is the magnitude of the frictional force that

asked by kelly on September 21, 2011
3. ### Physics

Three forces act on an object. A 4 N force acts due east and a 3 N force acts due north. If the net force on the object is zero, what is the magnitude of the third force?

asked by Yanna Singleton on December 1, 2018
4. ### Science

Study the scenario. An object is at rest. At five seconds, someone comes over and pushes the object with a force of 3 N to the right. Which of the following choices describes the force needed to keep the object in static

asked by Emily on September 12, 2018
5. ### PHYSICS

1. A 4.0 N force acts for 3 seconds on an object. The force suddenly increases to 15 N and acts for one more second. What impulse was imparted by these forces to the object? 2. A railroad freight car, mass 15,000 kg, is allowed to

asked by kim on December 4, 2008
6. ### Physics

a net force of 3.50 N acts on a 2.75 kg object. what is the acceleration of the object?

asked by Janet on November 29, 2012