Question

1. State true or false: Both uniform and non-uniform motion are caused due to unbalanced forces. (1)

2. Which of the following is an example of unbalanced force: (1)
a. Centripetal force
b. Gravity
c. All of the above
d. None of the above

3. State true or false: According to Newton's first law of motion, a ball thrown vertically upwards must return to the ground after some point of time without any external force. (1)

4. The total inertia of an object depends on its _______________ (1)
a. Mass
b. Density
c. Volume
d. All of the above

5. The unit of inertia is ________________ (1)

6. What are balanced and unbalanced forces? Explain in brief with a diagram. (2)

7. Calculate the momentum of an object moving with a velocity 20 km/h and having a mass of 1.6 tons. (2)

8. State the forces/properties responsible for the following: (3)
a. Free fall happens due to ______________________ force.
b. Feeling a backward push when a vehicle suddenly starts moving is due to ______________________.
c. A bicycle continuing to move forward even after releasing the pedal is due to ________________________.

9. State the first and second laws of motion. (3)

10. What would be the force of impact on a wall when a bowler bowls a ball of mass 150 g towards the wall from a distance of 20 m and the ball takes 2 seconds to reach the wall after being released with an initial velocity of 50 km/h? (5)​

Answer 1

Answer:

hi I hope this helps

Explanation:

1)Force does not come into picture when it comes to motion....uniform motion and non uniform motion is entirely based on speed and time for constant increase or decrease in velocity or acceleration..

hence it is false

Answer 2

1. TRUE

2. C. ALL OF THE ABOVE

3. FALSE

4. A. MASS

5. kg m2