Question

A force of 2 * 10 power 5 N acts on a body of mass
4 *10 power 4 kg at rest for 10 s. The final velocity of
the body is
(a) 5 ms s-1

(b) 50 m s-1
(c) 150 m s-1 (d) 250 m s-1​

Answer 1

Answer:

(b) 50 m/s

Explanation:

From, IInd law of motion.

F=m(v-u)/t

As,

F= 2×10^5 N

m= 4×10^4 kg

u= 0 m/s

t= 10 s

PUTTING VALUE.

2×10^5 = 4×10^4(v)/10

v= 50 m/s

Answer 2

Answer:

Explanation:

(b) 50 m/s