Question

if a ball is thrown vertically upward with velocity 40 m/sec.,then after 6 second what will be magnitude of displacement?

Answer 1

Equation of motion.

v = u + at

v is the final velocity. u is the initial velocity (40 m/s) & t is 2 s. a is the acceleration.

v = 40 + (-10 x 2)

v = 20 m/s

The velocity is 20 m/s upwards.

The value of -g is substituted for a as the object is moving against gravity.

Answer 2

After 6 sec the magnitude of displacement is 100m