All In One ICSE Physics>Chapter 3 - Laws of Motion>CHAPTER EXERCISE>Q 16

MEDIUM

9th ICSE

IMPORTANT

Earn 100

If a net horizontal force of $130 N$ is applied to a person with mass $60 kg$ who is resting on the edge of a swimming pool, what horizontal acceleration is produced?

Important Questions on Laws of Motion

MEDIUM

9th ICSE

IMPORTANT

All In One ICSE Physics>Chapter 3 - Laws of Motion>CHAPTER EXERCISE>Q 17

A certain force exerted for

1.2 s

raises the speed of an object from

1.8 m / s

to

4.2 m / s

. Later, the same force is applied for

2 s

. How much does the velocity change in

2 s

?

MEDIUM

9th ICSE

IMPORTANT

All In One ICSE Physics>Chapter 3 - Laws of Motion>CHAPTER EXERCISE>Q 18

A bus starts from the stop and take

50 s

to get the speed of

10 m / s

. If the mass of the bus along with the passengers is

10000 kg

, calculate the force applied by the engine of the bus to push the bus at the speed of

10 m / s

.

MEDIUM

9th ICSE

IMPORTANT

All In One ICSE Physics>Chapter 3 - Laws of Motion>CHAPTER EXERCISE>Q 19

A constant force acts on an object of

5 kg

for a period of

2 s

. It increases the velocity of an object from

3 m / s

to

7 m / s

. Find the magnitude of the applied force. Now, if the force was applied for a period of

5 s

, what would be the final velocity of the object?

MEDIUM

9th ICSE

IMPORTANT

All In One ICSE Physics>Chapter 3 - Laws of Motion>CHAPTER EXERCISE>Q 20

The speed-time graph of a car of $1000 kg$ mass is given. On the basis of this, answer the following question.

Question Image

What is the maximum force acting on the car?

MEDIUM

9th ICSE

IMPORTANT

All In One ICSE Physics>Chapter 3 - Laws of Motion>CHAPTER EXERCISE>Q 20

The speed-time graph of a car of $1000 kg$ mass is given. On the basis of this, answer the following question.

Question Image

What is the retarding force acting on the car?

MEDIUM

9th ICSE

IMPORTANT

All In One ICSE Physics>Chapter 3 - Laws of Motion>CHAPTER EXERCISE>Q 20

The speed-time graph of a car of $1000 kg$ mass is given. On the basis of this, answer the following question.

Question Image

For how long is no force is acting on the car?

EASY

9th ICSE

IMPORTANT

All In One ICSE Physics>Chapter 3 - Laws of Motion>CHAPTER EXERCISE>Q 20

The speed-time graph of a car of $1000 kg$ mass is given. On the basis of this, answer the following question.

Question Image

What is the velocity of the car from $4 s$ to $8 s$ ?

MEDIUM

9th ICSE

IMPORTANT

All In One ICSE Physics>Chapter 3 - Laws of Motion>CHALLENGERS>Q 1

A block of metal weighing

2 kg

is resting on a frictionless plane. It is stuck by a jet releasing water at the rate of

1 {kgs}^{- 1}

and with a speed of

5 {ms}^{- 1}

. The initial acceleration of the block is