1. A pushing force of 12 N is applied on a box for 32 ms. What is the magnitude
ID: 1397104 • Letter: 1
Question
1. A pushing force of 12 N is applied on a box for 32 ms. What is the magnitude of the impulse of this force?
0.11 N?s
0.76 N?s
0.47 N?s
0.38 N?s
2. A game of pocket billiards begins when the white ball, called the cue ball, is rolled toward a set of 15 numbered balls arranged in a triangle. Let the set of 16 balls in the game represent a system, and let equal the momentum of the cue ball. What is the momentum of the system just after the cue ball strikes the numbered balls? Assume that friction and other nonconservative forces are negligible.
16
15
4.
A block of mass m = 4.4 kg slides from left to right across a frictionless surface with a speed Vi=8.4 m/s It collides in a perfectly elastic collision with a second block of mass M that is at rest. After the collision, the 4.4-kg block reverses direction, and its new speed is vf =2.5m/s. What is V, the speed of the second block after the collision?
5.1 m/s
6.4 m/s
7.2 m/s
5.9 m/s
5.
A 0.140 kg baseball is thrown with a velocity of 28.0m/s It is struck with an average force of 5000.0N which results in a velocity of 37.0m/s in the opposite direction. How long were the bat and ball in contact?
3.12 × 10-2 s
1.30 × 10-2 s
1.82 × 10-3 s
4.37 × 10-3 s
1. A pushing force of 12 N is applied on a box for 32 ms. What is the magnitude of the impulse of this force?
0.11 N?s
0.76 N?s
0.47 N?s
0.38 N?s
2. A game of pocket billiards begins when the white ball, called the cue ball, is rolled toward a set of 15 numbered balls arranged in a triangle. Let the set of 16 balls in the game represent a system, and let equal the momentum of the cue ball. What is the momentum of the system just after the cue ball strikes the numbered balls? Assume that friction and other nonconservative forces are negligible.
16
15
before afterExplanation / Answer
1)F=12N
impulse=Faverage*t
=12*32*10^-3sec
=384*10^-3
=0.384Nsec--answer to first question
answer is D
Please raise differnet question for other questions.
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