The answer to this question is the first option which states that, inelastic since the girl moves in the same direction as the thrown ball. Inelastic collision involves two or more bodies sticking together and moving as one mass after the collision. In this collision the kinetic energy is not conserved but the momentum is conserved.
Answer:
Explanation:
Boy information
Mass = 50kg
Velocity = 5m/s
Trolley information
Mass = 20 kg
Velocity = 1.5 m/s
so using conservation law of momentum
MV + mv = ( M + m ) v'
50*5 + 20*1.5 = ( 50 + 20 ) v'
250 + 30 = 70 v'
280 = 70 v'
so v' = 4m/s which is their common velocity.
As we know that total work done by a force is given by
so it is product of force and displacement along same direction
as we can write it as
so it must be the product of force and displacement in same directions so correct answer must be
<u>B. in the same direction as the displacement vector and the motion.</u>
Answer:
food
Explanation:
did you get a chance to look at the maximum number of devices allowed by