1. Impulse is equal to
a. momentum
b. change in momentum
c. force multiplied by the distance it acts
d. velocity multiplied by time
2. Which of the following has the smallest momentum?
a. A cart of mass 20 kg moving at 0.5 m/s.
b. a ball of mass 150 grams moving at 20 m/s
c. a toy car of mass 1.5 kg moving at 1 m/s
d. a bullet of mass 10 grams moving at 350 m/s
3. what is the momentum of a 45 kg girl running at 4 m/s
a. 11.25 kg m/s
b. 41 kg m/s
c. 49 kg m/s
d. 180 kg m/s
4. which of the following is necessary condition for the total momentum of a system to be conserved
a. kinetic energy must not change
b. the system must be at rest
c. no net external force acts on the system
d. only the force of gravity act on the system
5. a gun recoiling when it is fired is an example of___.
a. conservation of momentum
b. conservation of angular momentum
c. conservation of energy
d. none of the above
Share
Answer:
1.)A
2.)B
3.)B
4.)D
5.)A
Explanation:
#KEEPONLEARNING
#PABRAINLIESTPO
Answer:
1.)A
2.)B
3.)B
4.)D
5.)A
Explanation:
hope thats help:)