While playing with her 5 year old cousin, a Physics 135 student pushed him forward on his scooter. She pushes with a force of 50 Newtons for 3.5 seconds.

If the boy and the scooter together have a mass of 30 kg, what is their final velocity?

a. 2.06 m/s

b. 12.54 m/s

c. 5.83 m/s

d. 0.99 m/s

Question

Physics

Salvatore Rosales

15 October, 20:07

While playing with her 5 year old cousin, a Physics 135 student pushed him forward on his scooter. She pushes with a force of 50 Newtons for 3.5 seconds.

If the boy and the scooter together have a mass of 30 kg, what is their final velocity?

a. 2.06 m/s

b. 12.54 m/s

c. 5.83 m/s

d. 0.99 m/s

+4

Answers (2)

Know the Answer?

Dashawn Roberson · Answer 1

10.2 m/s^2.

Explanation:

Momentum = Force x time

F x t = m*vf - m*vi

Initially at rest, vi = 0 m/s

v = F*t/m

= 50 * 3.5/30

= 5.83 m/s

acceleration = velocity/time

= 5.83/3.5

= 1.67 m/s^2

Using,

S = vi*t + 1/2 at^2

S = 1/2 * 1.67 * 3.5 * 3.5

= 10.21 m

Giana Porter · Answer 2

5.83 m/sec

Explanation:

We know that;

F=ma

also we know

a=V/t

put value of a in above equation;

==> F=mV/t

==> V=F*t/m = 50*3.5/30=5.833 m/sec

While playing with her 5 year old cousin, a Physics 135 student pushed him forward on his scooter. She pushes with a force of 50 Newtons for 3.5 seconds.If the boy and the scooter together have a mass of 30 kg, what is their final velocity?a. 2.06 m/sb. 12.54 m/sc. 5.83 m/sd. 0.99 m/s

While playing with her 5 year old cousin, a Physics 135 student pushed him forward on his scooter. She pushes with a force of 50 Newtons for 3.5 seconds.

If the boy and the scooter together have a mass of 30 kg, what is their final velocity?

a. 2.06 m/s

b. 12.54 m/s

c. 5.83 m/s

d. 0.99 m/s