Q12 Q12 A ball strikes the floor vertically downward with a speed 8 m/s and rebounds with the - Science - Motion

Question

Q12

Q12 A ball strikes the floor vertically downward with a speed 8 m/s
and rebounds with the same speed The magnitude of its change in
velocity will be

(1) Zero (2) 5 m/s

(3) 10 m/s (4) 40 m/s

Decoder_2 · Accepted Answer

Dear student,Since velocity is a vector quantity so we are concerned with the direction as well
So when ball moves downward velocity=5m/swhen ball moves upward velocity=-5m/s ( as direction is opposite to initial)change in velocity=5-(-5)=10m/sRegards

Q12 Q12. A ball strikes the floor vertically downward with a speed 8 m/s and rebounds with the same speed. The magnitude of its change in velocity will be (1) Zero (2) 5 m/s (3) 10 m/s (4) 40 m/s

Q12

Q12. A ball strikes the floor vertically downward with a speed 8 m/s and rebounds with the same speed. The magnitude of its change in velocity will be

(1) Zero (2) 5 m/s

(3) 10 m/s (4) 40 m/s