Advertisements
Advertisements
Question
The acceleration produced by a force of 5 N acting on a mass of 20 kg in m/s2 is :
Options
4
100
0.25
2.5
Solution
0.25
Acceleration = Force / Mass
= 5 / 20
= 0.25
APPEARS IN
RELATED QUESTIONS
A truck starts from rest and rolls down a hill with a constant acceleration. It travels a distance of 400 m in 20 s. Find its acceleration. Find the force acting on it if its mass is 7 metric tonnes (Hint: 1 metric tonne = 1000 kg).
An automobile vehicle has a mass of 1500 kg. What must be the force between the vehicle and road if the vehicle is to be stopped with a negative acceleration of 1.7 m s−2?
A bullet of mass 10 g travelling horizontally with a velocity of 150 m s−1 strikes a stationary wooden block and comes to rest in 0.03 s. Calculate the distance of penetration of the bullet into the block. Also calculate the magnitude of the force exerted by the wooden block on the bullet.
Fill in the following blanks with suitable words :
Newton’s second law of motion can be written as Force = mass × _____________ or Force = _____________ of change of _____________.
A body of mass 5 kg is moving with a velocity of 10 m/s. A force is applied to it so that in 25 seconds, it attains a velocity of 35 m/s. Calculate the value of the force applied.
How long will it take a force of 10 N to stop a mass of 2.5 kg which is moving at 20 m/s ?
A passenger in a moving train tosses a coin which falls behind him. This shows that the motion of train is :
Complete a sentence and explain it.
During a collision, ______ remains constant.
State Newton’s second law.
Two blocks each of mass m lie on a smooth table. They are attached to two other masses as shown in the figure. The pulleys and strings are light. An object O is kept at rest on the table. The sides AB and CD of the two blocks are plane and made reflecting. The acceleration of two images formed in those two reflecting surfaces with respect to each other is ______.
