SSC CGL Science – Motion, Force & Laws of Motion – Level 1 · Warm-up · Tier I Level

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SSC CGL Science – Motion, Force & Laws of Motion – Level 1 · Warm-up · Tier I Level – 12 questions, subject: General Science. Every question has the correct answer with a one-line explanation; tap "Show Answer". Free practice for TNPSC, UPSC, SSC, Bank and RRB exams – Shanmugam IAS Academy, Coimbatore.

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1.  
One-line factThe SI unit of momentum is:

Correct Answer: D [kg m/s]

Explanation:

Momentum = mass × velocity → kg × m/s.

2.  
A speed of 54 km/h is equal to:

Correct Answer: C [15 m/s]

Explanation:

Answer: 15 m/s. 54 × 5/18 = 15 m/s.

3.  
The inertia of a body is measured by its:

Correct Answer: A [mass]

Explanation:

Mass is the measure of inertia (Newton's first law).

4.  
Odd one outOdd one out (the scalar among vectors):

Correct Answer: B [Speed]

Explanation:

Speed has no direction; the others are vectors.

5.  
The slope of a velocity–time graph gives:

Correct Answer: B [acceleration]

Explanation:

Slope = Δv/Δt = acceleration; the area gives displacement.

6.  
Dust comes out of a carpet when it is beaten with a stick. This is an example of:

Correct Answer: A [inertia of rest]

Explanation:

The carpet moves; the dust particles tend to stay at rest and fall off.

7.  
The working of a rocket is based on:

Correct Answer: C [Newton's third law of motion]

Explanation:

The rocket pushes gases backward; the gases push the rocket forward (also conservation of momentum).

8.  
One newton is equal to:

Correct Answer: D [1 kg m/s²]

Explanation:

Answer: 1 kg m/s². F = ma → 1 N = 1 kg × 1 m/s².

9.  
A body moving along a circular path with uniform speed has:

Correct Answer: A [a changing velocity]

Explanation:

Direction changes every instant, so velocity (and momentum) change – the motion is accelerated.

10.  
Fill in the blankRolling friction is ____ sliding friction.

Correct Answer: C [less than]

Explanation:

Rolling friction is much smaller – the reason for wheels and ball bearings.

11.  
Statement-basedConsider the statements:
I. Displacement can be zero even when the distance travelled is not zero.
II. Distance travelled can be less than the magnitude of displacement.
Which is/are correct?

Correct Answer: D [Only I]

Explanation:

A full lap gives zero displacement; distance is never less than displacement.

12.  
Neglecting air resistance, a freely falling body near the Earth's surface has an acceleration of about:

Correct Answer: B [9.8 m/s²]

Explanation:

g ≈ 9.8 m/s², the same for all bodies in vacuum.

➤ Full notes, shortcuts and every answer explained – SSC CGL 2026 General Science book (₹149): www.shanmugamiasacademy.in/study-materials/ssc-cgl-general-science

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