Because I don’t have choices I’m not sure what to chose from or what the subject is about but I can tell you that the box moves from the result of Inertia, and is kenetic energy
Answer:
Explanation:
Given
mass m collides elastically with floor and jump to its original height I .e.velocity of rebound is same as the initial velocity
Impulse imparted by steel ball to the ground is given by the change in momentum of steel ball

and impulse is product of average force and time
so we need time to calculate the average force. So, option e is correct
Answer:
is constant
Explanation:
Energy cannot be destroyed or created, but can transfer from places to places and in different forms.
Acceleration = change in velocity / time
= 40 mi/s / 2s = 20 mi/s/s