Two balls of equal masses moving with velocities 10 m/s and -7 m/s respectively collide elastically. Their velocities after collision will be
A. 3 ms-1 and 17 ms-1
B. -7 ms-1 and 10 ms-1
C. 10 ms-1 and -7 ms-1
D. 3 ms-1 and -70 ms-1
Answer:B
Two balls of equal masses moving with velocities 10 m/s and -7 m/s respectively collide elastically. Their velocities after collision will be
A. 3 ms-1 and 17 ms-1 B. -7 ms-1 and 10 ms-1 C. 10 ms-1 and -7 ms-1 D. 3 ms-1 and -70 ms-1