HARD
9th CBSE
IMPORTANT
Earn 100

Two blocks made of different metals identical in shape and size are acted upon by equal forces which cause them to slide on a horizontal surface. The acceleration of the second block is found to be 5 times that of the first. What is the ratio of the mass of the second to first?

Important Questions on Force and Laws of Motion

HARD
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 9 - Force and Laws of Motion>CHAPTER TEST>Q 21
An object undergoes an acceleration of 8 ms-2 starting from rest. Find the distance travelled in 1 second.
HARD
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 9 - Force and Laws of Motion>CHAPTER TEST>Q 22
A body of mass 500 g is at rest on a frictionless surface. Calculate the distance travelled by it in 10 second when acted upon by a force of 10N.
HARD
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 9 - Force and Laws of Motion>CHAPTER TEST>Q 23
You might have observed that when you walk on ice you take small steps. Why ?
HARD
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 9 - Force and Laws of Motion>CHAPTER TEST>Q 24
Why you have to apply more force in moving a cycle which is punctured ?
HARD
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 9 - Force and Laws of Motion>CHAPTER TEST>Q 25
If someone jumps to the shore from a boat, the boat moves in the opposite direction. Why?
HARD
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 9 - Force and Laws of Motion>CHAPTER TEST>Q 26
Why a fireman finds it difficult to hold a hose, which ejects large amounts of water at a high speed?
MEDIUM
9th CBSE
IMPORTANT
EVERGREEN Self-Study in SCIENCE>Chapter 9 - Force and Laws of Motion>CHAPTER TEST>Q 27
Why you tie the luggage with a rope on the roof of buses?