Question

please solve this attachment​

Answer 1

Answer:

1 FIRST ONE IS THE ANSWER,BECAUSE, WHEN A BODY CHANGE'S ITS VELOCITY

Answer 2

Answer:

velocity = 30 m/s

stop 1 = 2 second

Force = 1500 N

momentum = ?

mass of car = ?

Explanation:

1st we have to calculate the mass

Force= mass x acceleration

1500N= mass x velocity ➗ time

1500N= mass x 30 ➗ 2

1500N= mass x 15

1500 ➗ 15 = mass

100 = mass

hence,mass= 100Kg

2nd) momentum = mass x velocity

= 100 x 30

= 3000