Physics

Grade-8

Easy

Question

# Law of conservation written as Is about conservation of

- Speed
- Mass
- Velocity
- Momentum

Hint:

### The formula for the law of conservation of momentum is: **m 1 u 1 + m 2 u 2 = m 1 v 1 + m 2 v 2**.

## The correct answer is: Momentum

- Law of conservation of momentum states that for two or more bodies in an isolated system acting upon each other, their total momentum remains constant unless an external force is applied.

### Related Questions to study

Physics

### Newton’s third law of motion is used to derive Law of conservation of momentum. Is the statement true or false?

- True
- False

### Newton’s third law of motion is used to derive Law of conservation of momentum. Is the statement true or false?

PhysicsGrade-8

- True
- False

Physics

### Law of conservation of momentum states that “Magnitude of the final momenta = magnitude of the initial momenta.” Is the statement true or false?

- True
- False

### Law of conservation of momentum states that “Magnitude of the final momenta = magnitude of the initial momenta.” Is the statement true or false?

PhysicsGrade-8

- True
- False

Physics

### Law of conservation of momentum states that, “The sum of momenta of the two objects before collision is equal to the sum of momenta after the collision provided there is no external unbalanced force acting on them. ”Is the statement true or false?

- True
- False

### Law of conservation of momentum states that, “The sum of momenta of the two objects before collision is equal to the sum of momenta after the collision provided there is no external unbalanced force acting on them. ”Is the statement true or false?

PhysicsGrade-8

- True
- False

Physics

### The velocity after and before collision is same. Is the statement true or false?

- True
- False

### The velocity after and before collision is same. Is the statement true or false?

PhysicsGrade-8

- True
- False

Physics

### What is being depicted in the image:

- Law of conservation of momentum
- Law of conservation of acceleration
- Law of conservation of velocity
- Law of conservation of mass

### What is being depicted in the image:

PhysicsGrade-8

- Law of conservation of momentum
- Law of conservation of acceleration
- Law of conservation of velocity
- Law of conservation of mass

Physics

### What is missing in this statement?

The sum of momenta of the two objects before collision is equal to the sum of momenta after the collision

- no external force is acting on it
- no internal force is acting on it
- external force is acting on it
- internal force is acting on it

### What is missing in this statement?

The sum of momenta of the two objects before collision is equal to the sum of momenta after the collision

PhysicsGrade-8

- no external force is acting on it
- no internal force is acting on it
- external force is acting on it
- internal force is acting on it

Physics

### Mathematically state law of conservation of momentum.

### Mathematically state law of conservation of momentum.

PhysicsGrade-8

Physics

### Mathematically represent, “The sum of momenta of the two objects before collision is equal to the sum of momenta after the collision, provided there is no external unbalanced force acting on them.”

### Mathematically represent, “The sum of momenta of the two objects before collision is equal to the sum of momenta after the collision, provided there is no external unbalanced force acting on them.”

PhysicsGrade-8

Physics

### “The sum of momenta of the two objects before collision is equal to the sum of momenta after the collision provided there is no external unbalanced force acting on them.” This statement belongs to:

- Law of conservation of momentum
- Law of conservation of acceleration
- Law of conservation of velocity
- Law of conservation of mass

### “The sum of momenta of the two objects before collision is equal to the sum of momenta after the collision provided there is no external unbalanced force acting on them.” This statement belongs to:

PhysicsGrade-8

- Law of conservation of momentum
- Law of conservation of acceleration
- Law of conservation of velocity
- Law of conservation of mass

Physics

### A book is kept on a table. Gravity acts on the book and pushes it down. But the book does not go down. Why?

- An equal and opposite force is exerted by the table.
- An unequal and opposite force is exerted by the table.
- An equal force is exerted by the table.
- An opposite force is exerted by the table.

### A book is kept on a table. Gravity acts on the book and pushes it down. But the book does not go down. Why?

PhysicsGrade-8

- An equal and opposite force is exerted by the table.
- An unequal and opposite force is exerted by the table.
- An equal force is exerted by the table.
- An opposite force is exerted by the table.

Physics

### A book is kept on a table. Newton’s third law applies here.

- True
- False

### A book is kept on a table. Newton’s third law applies here.

PhysicsGrade-8

- True
- False

Physics

### “A ball falls on the ground and it bounces. Newtons third law applies on it.” Is the statement true or false?

- True
- False

### “A ball falls on the ground and it bounces. Newtons third law applies on it.” Is the statement true or false?

PhysicsGrade-8

- True
- False

Physics

### A man is playing with a ball. The force applied by the man on the ball is F1. The force applied by the ball on the man is F2. Which of the following is true?

- F1 > F2
- F1 < F2
- F1 = F2
- 2 F1 = F2

### A man is playing with a ball. The force applied by the man on the ball is F1. The force applied by the ball on the man is F2. Which of the following is true?

PhysicsGrade-8

- F1 > F2
- F1 < F2
- F1 = F2
- 2 F1 = F2

Physics

### A bus with a mass of 2500 Kg travelling with an acceleration of 2 m/s^{2} hits a light pole. What force does the bus experience?

- 5000 N
- 1250 N
- 1/5000 N
- 1/1250 N

### A bus with a mass of 2500 Kg travelling with an acceleration of 2 m/s^{2} hits a light pole. What force does the bus experience?

PhysicsGrade-8

- 5000 N
- 1250 N
- 1/5000 N
- 1/1250 N

Physics

### A driver hits a tree with a force of 20N. what force does the car experience?

- 20 N
- 200 N
- 0.2 N
- 2 N

### A driver hits a tree with a force of 20N. what force does the car experience?

PhysicsGrade-8

- 20 N
- 200 N
- 0.2 N
- 2 N