English

What causes motion in a body?

Advertisements
Advertisements

Question

What causes motion in a body?

One Line Answer
Advertisements

Solution

Unbalance external force causes motion in the body.
shaalaa.com
  Is there an error in this question or solution?
Chapter 3: Laws of Motion - Exercise 3 [Page 128]

APPEARS IN

Frank Physics Part 1 [English] Class 9 ICSE
Chapter 3 Laws of Motion
Exercise 3 | Q 14 | Page 128

RELATED QUESTIONS

The below figure shows the position-time graph of a particle of mass 4 kg.

  1. What is the force on the particle for t < 0, t > 4 s, 0 < t < 4 s?
  2. What is the impulse at t = 0 and t = 4 s? (Consider one-dimensional motion only.)


An aircraft executes a horizontal loop at a speed of 720 km/h with its wings banked at 15°. What is the radius of the loop?


A block of mass 15 kg is placed on a long trolley. The coefficient of static friction between the block and the trolley is 0.18. The trolley accelerates from rest with 0.5 ms–2 for 20 s and then moves with uniform velocity. Discuss the motion of the block as viewed by (a) a stationary observer on the ground, (b) an observer moving with the trolley.


Two bodies A and B of same mass are moving with velocities v and 2v, respectively. Compare their (i) inertia and (ii) momentum.


A force acts for 10 s on a stationary body of mass 100 kg, after which the force ceases to act. The body moves through a distance of 100 m in the next 5 s. Calculate: The velocity acquired by the body.


A stone is dropped freely from the top of a tower and it reaches the ground in 4 s. Taking g = 10m s-2, calculate the height of the tower.


A pebble is dropped freely in a well from its top. It takes 20 s for the pebble to reach the water surface in the well. Taking g = 10 m s-2 and speed of sound = 330 m s-1. Find : The time when echo is heard after the pebble is dropped.


Calculate the velocity of a body of mass 0.5 kg, when it has a linear momentum of 5 Ns.


An electron of mass 9 × 10−31 kg is moving with a linear velocity of 6 × 107 ms−1. Calculate the linear momentum of electron.


Newton’s Second Law corrected the old belief that force is needed to maintain motion. This idea came from the philosopher ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×