Question

Forces 4i-3j+7k and -2i+2j-8k are acting on a particle and displace it from the point (5,7,1) to (2,5,-6), then the work done by the force is

Answer 1

Answer:

Explanation:

V^2 = u^2 + 2as

0 = u^2 - 2*g*5

u = 10m/s

the initial speed of the ball was 10 m/s

V = u + at

0 = 10 - gt

t = 1 sec

time taken by the ball to reach the highest point is 1 second.