Question

1. Kinetic energy depends on [ ]

a) Frame of reference b) Direction of motion c) Both a and b d) Can’t say

2. Kinetic energy is always [ ]

a) Positive b) Negative c) Either a or b d) Neither a nor b

3. Two buses are moving with same kinetic energy and their masses are in the ratio 1 : 2. The ratio

of their velocities is [ ]

a) 1 : 1 b) 1 : 2 c) 2 :1 d) 2 :1

4. If kinetic energy increases to 16 times then the velocity should increase [ ]

a) 4 times b) 2 times c) 16 times d) 3 times

5. Expression for kinetic energy [ ]

a) 2 mv2 b)

1 2

2

mv c)

1 2

4

mv d)

2

3

mv

6. Statement (A) : Matter can be converted into energy [ ]

Statement (B) : Energy can be converted into matter

a) A is true B is false b) A is false B is true

c) Both A and B are true d) Both A and B are false

7. The dimensional formula of energy [ ]

a) [M0

L2

T–2] b) [M2

L–2 T2

] c) [M L2

T–2] d) [M–1 L2

T–1]

8. Energy is [ ]

a) Scalar b) Vector c) Both a and b d) Can’t say

9. SI unit is same for the following [ ]

a) Work, power b) Energy, power c) Work, Energy d) Force, Displacement

10. A vehicle of mass 1000 kg has a kinetic energy of of 20,000 J at an instant. The velocity at that

instant is [ ]

a) 1

2 15 ms

 b) 1

2 10 ms



c) 1

3 10 ms

 d) 50 ms–1

Answer 1

Answer:

1) both a and b

2) either a or b

3) I think it should be 4:1 but in options it's not given we can say the answer is 2:1

I can help you this much... hope it helped

Answer 2

my snap I'd-deeksha1464