School Olympiads - National Science Olympiad (NSO)

Newtonian Mechanics, Gravitation & Work-Energy question bank (Class 9 & 10 - Advanced Physical & Life Sciences)

Practice 5 free School Olympiads - National Science Olympiad (NSO) Class 9 & 10 - Advanced Physical & Life Sciences - Newtonian Mechanics, Gravitation & Work-Energy questions with answers and step-by-step solutions.

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Q1.

A car of mass $1000\text{ kg}$ is moving at $20\text{ m/s}$. The brakes are applied and it comes to rest in $5\text{ seconds}$. What is the magnitude of the average braking force exerted on the car?

(A)

{'key': 'A', 'text': '2000 N'}

(B)

{'key': 'B', 'text': '4000 N'}

(C)

{'key': 'C', 'text': '5000 N'}

(D)

{'key': 'D', 'text': '10000 N'}

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Q2.

A body of mass $30\text{ kg}$ moves under a constant force of $160\text{ N}$ in a laboratory experiment on Newtonian Mechanics, Gravitation & Work-Energy. What is the acceleration produced in $\text{m/s}^2$?

(A)

{'key': 'A', 'text': '5 m/s²'}

(B)

{'key': 'B', 'text': '10 m/s²'}

(C)

{'key': 'C', 'text': '8 m/s²'}

(D)

{'key': 'D', 'text': '3 m/s²'}

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