Free Force and Motion MCQs with Answers
1,416 Force and Motion MCQs from Physics, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
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1,416 questions · page 69 of 71
- A. 25
- B. 20
- C. 16
- D. 8
Explanation: We have to use Newton's second law, F = ma, in this question. Usually, we use SI units, i.e.
Correct answer: 8- A. 5km/hr²
- B. 5km/sec²
- C. 5km_hr/sec
- D. 5km/hr_sec
Explanation: The acceleration of the particle cannot be determined with the given information.
Correct answer: 5km/hr²- A. 9.8 m/s²
- B. 980 m/s
- C. 98 m/s²
- D. -9.8 m/s
Explanation: Using the first equation of motion: v = u + at final velocity(v) =0m/s initial velocity (u) =98m/s time (t) = 10 acceleration (a) = ?
Correct answer: -9.8 m/s- A. 2s
- B. 4s
- C. 8s
- D. 16s
Explanation: To solve this problem, we use the second equation of motion: S = ut + ½ gt2.
Correct answer: 4s1365. A person travels a distance x = 20t+2At2, where A is a constant. The acceleration of the person is:
- A. A/4 ms^-2
- B. 4/A ms^-2
- C. 4 ms^-2
- D. 4A ms^-2
Explanation: The given equation for distance is x = 20t + 2At^2. To find acceleration, we need to differentiate this equation with respect to…
Correct answer: 4A ms^-2- A. 40m
- B. 80m
- C. 20m
- D. 100m
Explanation: Since,s = ut + ½ at²u = 0, a = gt = 4sg ≈ 10 ms-²Then,s = (0)(4) + ½ (10)(4)²s = 0 + ½ (10)(16)s = ½ (160)s = 80m
Correct answer: 80m1367. A ball is dropped from the roof of a very tall building.What is its velocity after falling for 5.0s?
- A. 1.96 m/s
- B. 9.80 m/s
- C. 49.0 m/s
- D. 98.0 m/s
Explanation: List the known and unknown values.u = initial velocity = 0 m/sv = final velocity = ?m/sa = g = acceleration due to gravity = 9.8 m/s²t =…
Correct answer: 49.0 m/s- A. 1.3 m
- B. 2.5 m
- C. 5.0 m
- D. 10.0 m
Explanation: We must calculate the length of the tube, i.e distance traveled by the feather. We can use the formula for linear motion s = ut + 1/2at2.
Correct answer: 1.3 m- A. 2V
- B. -V
- C. +V
- D. Zero
Explanation: -V: This option is correct. In an elastic collision, the first particle will experience a change in direction and will have a velocity…
Correct answer: -V- A. 0
- B. 1/2mv2
- C. mv2
- D. 2mv2
Explanation: Since there are two equal masses travelling with the equal velocity. Therefore according to the law of conservation of kinetic…
Correct answer: mv2- A. Option A
- B. Option B
- C. Option C
- D. Option D
Explanation: Since there is no extra force other than the action and reaction force so the linear momentum should be conserved.Suppose the system moves…
Correct answer: Option B- A. 1/50 Sec
- B. 1/25 Sec
- C. 1/60 Sec
- D. 1 Sec
Explanation: F=mv/t2 x 104 N =2*(100-(-100))/tt=1/50 s
Correct answer: 1/50 Sec- A. 3km
- B. 9km
- C. 7km
- D. 5km
Explanation: We have to find the displacement of the cyclist from the initial position. He moves 4km east (to the right) and 3km north (upwards).
Correct answer: 5km- A. 12 ms-1
- B. 13.3 ms-1
- C. 40 ms-1
- D. 48 ms-1
Explanation: To find the overall average speed, we use the formula: Average speed = Total distance / Total time.
Correct answer: 48 ms-1- A. 5m/s
- B. 10m/s
- C. -5m/s
- D. 15m/s
Explanation: The relative velocity of the two cars with respect to one another can be found by adding their velocities.
Correct answer: 15m/s- A. 12 ms-1
- B. 13.3 ms-1
- C. 48 ms-1
- D. 40 ms-1
Explanation: V - overall average speedS - a total distancet - a total timeV = S/tS = V1*t1 + V2*t2 + V3*t3V1, V2, V3 - average speeds for each gear…
Correct answer: 48 ms-1- A. 2v
- B. √2v
- C. v
- D. v/√2
Explanation: c) v/√2 This option suggests that the average velocity of the man is v. This is the correct answer.
Correct answer: v/√2- A. 2.5
- B. 2.4
- C. 5
- D. 2.3
Explanation: We find out the average speed by using2v1v2/(v1+v2) = 12/5 = 2.4 km/h
Correct answer: 2.4- A. 10 sec
- B. 15 sec
- C. 20 sec
- D. 25 sec
Explanation: To calculateSpeed = 20m/sTotal distance = 100m +200m =300mTime = distance/speed = 300/20 =15s
Correct answer: 15 sec- A. 1/2m( vf2 -vi2 )
- B. Δt/ma
- C. m(vf-vi)/Δ t
- D. Mass
Explanation: According to Newton's 2nd law F=ma Putting a= vf-vi/∆t F= m(vf-vi)/∆t Solving this ahead F=mvf-mvi /∆t we know Momentum = mv So mvf =…
Correct answer: m(vf-vi)/Δ t