# science

posted by .

A body was moving with a velocity 60km/hour. It is brought to rest by applying a force of 200newton.Find the mass of body in5sec

• science -

I'm assuming the body is brought to rest in 5 sec.

Vo = 60km/h = 60,000m/3600s. = 16.67 m/s.

V = Vo + a*t.
0 = 16.67 + a*5,
a = -3.33 m/s^2.

Fap = M*a.
=200 = M*(-3.33),
M = 60.0 kg.

## Similar Questions

1. ### physical science

Which of the following four bodies has the greatest kinetic energy?
2. ### physics

a body is moving with a velocity 96m/s is to be brought to rest in the 16 sec find displacement of body before it comes to rest and also find velocity after 10 th sec
3. ### Physics

A body of mass 10kg moving with velocity 30m/s collide with another body of mass 15kg.If the velocity of both the body are same after collision.Then find their common velocity.
4. ### Elementary mechanics

A force of 2i+7jN acts on a body of mass 5kg for 10 seconds. The body was initally moving with constant velocity of i-2jm/s.Find the final velocity of the body in m/s, in vector form. (a)5i+12j(b)12i-5j(c)10i-7j(d)7i+10j
5. ### science

A body of mass 20kg moving with a velocity of 8m/s collides with a stationary body of mass 10kg and the two stick together.They then move with a common velocity V.Find the value of V.
6. ### science

a body B moving a velocity of 20m/s collid with anothet body A moving in the same direction on the same horzontal line with a velocity of 10m/s, if the of body A is three time the same of body B and the collion perfectly elastic calculate …
7. ### physics

A body moving with a velocity of 3m/s is brought to rest by a constant force after travelling 15m, calculate the retardation.
8. ### Science

Body of mass 10 kg is at rest on a horizontal surface. A force of magnitude 10 N is applied to the body for 10 s. What is the final speed of the body?
9. ### science

a body of moss4kg moving with a uniform velocity30m/s is brought to rest in 6sec . find the force required to stop body.
10. ### physics

A body of mass 5kg moving with a speed of 3m/s collides head on with a body of mass 3kg moving in the opposite direction at speed of 2m/s The first body stops after the collision The final velocity of the second body is Ans:3m/s

More Similar Questions