Mechanics RRB PYQ – Physics Previous Year Questions
Practice Mechanics RRB PYQ questions from Railway examinations, including RRB NTPC PYQ, RRB Group D PYQ, RRB JE PYQ, RRB ALP PYQ and RRB Technician PYQ. This topic-wise Physics question set covers important concepts related to work, power, energy, mass, force, Newton’s laws of motion, momentum, distance, displacement, speed, velocity, acceleration, equations of motion, friction and motion, helping you revise essential Physics concepts for RRB examinations.
Each question includes the correct answer and an explanation to help you understand the concept, strengthen your Physics fundamentals, and revise important Mechanics topics for RRB Railway examinations.
Start practicing Mechanics RRB PYQs and strengthen your Physics preparation.
781
A force of 350 N acts on a mass of 500 kg. Find its acceleration.
RRB Group D
19/09/2018 / Shift-III
2018
✓ Answer:B0.7 m/s²
a = F/m = 350/500 = 0.7 m/s².
782
A 150 kg object's velocity increases from 6 m/s to 16 m/s in 5 s. Find its acceleration.
RRB Group D
12/10/2018 / Shift-II
2018
✓ Answer:C2 m/s²
a = (16 − 6)/5 = 2 m/s².
783
When acceleration is negative, a body's velocity ______.
RRB Group D
19/09/2018 / Shift-III
2018
✓ Answer:CDecreases
Under the source's convention of positive initial velocity, negative acceleration decreases the velocity.
784
Negative acceleration is opposite to the direction of which quantity?
RRB ALP & Technician
09/08/2018 / Shift-I
2018
✓ Answer:AVelocity
The source uses “negative acceleration” to mean retardation, which acts opposite to velocity. In general, the sign of acceleration depends on the chosen coordinate direction.
785
______ measures the change in an object's velocity per unit time.
RRB Group D
05/12/2018 / Shift-II
2018
✓ Answer:CAcceleration
Acceleration is the rate of change of velocity.
786
A trolley starts from rest with acceleration 2 m/s². What is its velocity after 4 s?
RRB JE
14/12/2014
2014
✓ Answer:A8 m/s
v = u + at = 0 + 2 × 4 = 8 m/s. A shift is not provided or is cropped in the supplied scan; the available date is retained.
787
In rectilinear motion, objects move along a ______.
RRB JE (Stage-II)
01/09/2019 / Shift-III
2019
✓ Answer:AStraight line
Rectilinear motion is motion along a straight line.
788
Which pair always has the same direction?
RRB Group D
15/11/2018 / Shift-III
2018
✓ Answer:BForce and acceleration
The net force and acceleration have the same direction because F_net = ma.
789
A train starts from rest and reaches 90 km/h in 5 minutes with uniform acceleration. Find the distance travelled.
RRB ALP & Technician
13/08/2018 / Shift-III
2018
✓ Answer:D3.75 km
90 km/h = 25 m/s and t = 300 s. s = (0 + 25) × 300/2 = 3750 m = 3.75 km.
790
Starting from rest, Sony reaches 60 m/s on a bicycle in 30 s. Find the acceleration.
RRB Group D
05/12/2018 / Shift-I
2018
✓ Answer:B2 m/s²
a = (60 − 0)/30 = 2 m/s².
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