Question

If a net force of 7 n was constantly applied on 400 g object at rest, how long will it take to raise its velocity to 80 m/s? A. 0 s b. 2.23 s c. 3.47 s d. 4.57 s

Answer 1

Answer:

we know f=mv/t from that 7=400/1000×80/t=4.57s