Question

A ball of mass 150 g is acted upon by a force of 250 dynes for 10 seconds. If the ball is initially at rest, then calculate the final velocity.​

Answer 1

Answer:Given that,

Force F=100dyn

Mass m=5g

Time t=10s

Initial velocity u=0

Now, the acceleration is

 F=ma

a=  

m

F

​

 

a=  

5×10  

−3

 

100×10  

−5

 

​

 

a=0.20m/s  

2

 

Now, from equation of motion

 v=u+at

v=0+0.20×10

v=2m/s

v=200cm/s

Hence, the velocity produced is 200 cm/s

Explanation: