Question

A 3.5-kg mass has an initial velocity of 4 m/s . How much force is required to increase the velocity of the mass to 8 m/s in 3 ?

Answer 1

4.67N

Step-by-step explanation:

F = M(V - U /t

Mass M = 3.5kg

Final velocity v = 8m/s

Initial velocity u = 4m/s

t = 3 secs

Therefore,

F = 3.5(8 - 4) /3

= 3.5 (4) /3

= 3.5 x 4 /3

= 14/3

= 4.67N