Home
Class 9
PHYSICS
Two people push a car for 3 s with a com...

Two people push a car for 3 s with a combined net force of `200 N.(AS_(1))`
(a) Calculate the impulse provided to the car.
(b) If the car has a mass of 1200 kg, what will be its change in velocity ?

Text Solution

Verified by Experts

(a) `600 N.s`
(b) `0.5 m//s`
Promotional Banner

Topper's Solved these Questions

  • LAW OF MOTION

    NCERT GUJARATI|Exercise LET US IMPROVE OUR LEARNING (HIGHER ORDER THINKING QUESTIONS )|4 Videos
  • LAW OF MOTION

    NCERT GUJARATI|Exercise LET US IMPROVE OUR LEARNING (MULTIPLE CHOICE QUESTIONS )|5 Videos
  • LAW OF MOTION

    NCERT GUJARATI|Exercise LET US IMPROVE OUR LEARNING (REFLECTIONS ON CONCEPTS )|3 Videos
  • HEAT

    NCERT GUJARATI|Exercise Multiple choice questions (Suggested Projects)|1 Videos
  • MOTION

    NCERT GUJARATI|Exercise THINK AND DISCUSS|14 Videos

Similar Questions

Explore conceptually related problems

A car P is moving with a uniform speed 5sqrt3 m//s towards a carriage of mass 9 kg at rest kept on the rails at a point B as shown in figure. The height AC is 120 m. Cannon balls of 1 kg are fired from the car with an initial velocity 100m//s at an angle 30^@ with the horizontal. The first cannon hall hits the stationary carriage after a time t_0 and sticks to it. Determine t_0 . At t_0 , the second cannon ball is fired. Assume that the resistive force between the rails and the carriage is constant and ignore the vertical motion of the carriage throughout. If the second ball also hits and sticks to the carriage, what will be the horizontal velocity of the carriage just after the second impact?

Certain force acting on a 20 kg mass changes its velocity from 5ms^(-1) to 2ms^(-1) . Calculate the work done by the force.

Comprehension # 2 When two bodies collide normally they exert equal and opposite impulses on each other. Impulse = change in linear momentum. Coefficient of restitution between two bodies is given by :- e = |"Relative velocity of separation"|/|"Relative velocity of approach"| = 1 , for elastic collisionTwo bodies collide as shown in figure. During collision they exert impulse of magnitude J on each other. For what value of J (in N-s ) the 2 kg block will change its direction of velocity :-

A constant force of 100 N should be applied to a stationary object of mass 20 kg for duration of .......... so that its velocity would be 100 m s^(-1)

The mass of a car is 1200 kg. It comes to rest due to retardation of 2 ms^(-2) . What would be the force (frictional force) acting between the car and road ?