FORCE AND MOTION

🚀 FORCE & MOTION - MDCAT TEST 🚀

Question 1/25

Correct 0

Wrong 0

Time 20:00

[ ADSENSE AD CODE YAHAN PASTE KAREN ]

Question 1

What is the unit of force in the SI system?

A) Newton (N)B) Kilogram (kg)C) Meter (m)D) Second (s)

Correct Answer: A) Newton (N)
Explanation: SI unit of force is Newton. 1N = 1 kg·m/s²

Question 2

A force of 10 N is applied to an object, causing it to accelerate at 2 m/s². What is the mass of the object?

A) 2 kgB) 5 kgC) 10 kgD) 20 kg

Correct Answer: B) 5 kg
Explanation: F = ma → m = F/a = 10/2 = 5 kg

Question 3

An object is moving with a velocity of 10 m/s. If a force of 5 N is applied to it for 1 sec on 1kg mass, what will be its new velocity?

A) 5 m/sB) 10 m/sC) 15 m/sD) 20 m/s

Correct Answer: C) 15 m/s
Explanation: a=F/m=5/1=5 m/s², v=u+at=10+5=15 m/s

Question 4

What is the weight of an object of mass 10 kg? (g=10 m/s²)

A) 10 NB) 50 NC) 100 ND) 200 N

Correct Answer: C) 100 N
Explanation: W = mg = 10 × 10 = 100 N

Question 5

A car is moving with a velocity of 20 m/s. If the brakes are applied, and the car comes to rest in 4 seconds, what is the acceleration of the car?

A) -2 m/s²B) -4 m/s²C) -6 m/s²D) -5 m/s²

Correct Answer: D) -5 m/s²
Explanation: a = (v-u)/t = (0-20)/4 = -5 m/s²

Question 6

What is the acceleration of an object if a force of 20 N is applied to it and it has a mass of 4 kg?

A) 2 m/s²B) 4 m/s²C) 6 m/s²D) 5 m/s²

Correct Answer: D) 5 m/s²
Explanation: a = F/m = 20/4 = 5 m/s²

Question 7

An object is moving with a velocity of 15 m/s. If it is subjected to a uniform acceleration of 2 m/s², what will be its velocity after 3 seconds?

A) 15 m/sB) 21 m/sC) 27 m/sD) 33 m/s

Correct Answer: B) 21 m/s
Explanation: v = u + at = 15 + 2×3 = 21 m/s

Question 8

What is the weight of an object of mass 20 kg on the surface of the Earth? (g=9.8 m/s²)

A) 100 NB) 200 NC) 400 ND) 196 N

Correct Answer: D) 196 N
Explanation: W = mg = 20 × 9.8 = 196 N

Question 9

A car is traveling at a speed of 30 m/s. If the brakes are applied, and the car comes to rest in 6 seconds, what is the acceleration of the car?

A) -2 m/s²B) -4 m/s²C) -6 m/s²D) -5 m/s²

Correct Answer: D) -5 m/s²
Explanation: a = (0-30)/6 = -5 m/s²

Question 10

What is the force required to accelerate a 10 kg object at a rate of 3 m/s²?

A) 10 NB) 20 NC) 30 ND) 40 N

Correct Answer: C) 30 N
Explanation: F = ma = 10 × 3 = 30 N

Question 11

What is the momentum of an object of mass 5 kg moving with a velocity of 10 m/s?

A) 25 kg m/sB) 50 kg m/sC) 75 kg m/sD) 100 kg m/s

Correct Answer: B) 50 kg m/s
Explanation: p = mv = 5 × 10 = 50 kg m/s

Question 12

A force of 10 N is applied to an object, causing it to accelerate at 5 m/s². What is the mass of the object?

A) 1 kgB) 2 kgC) 5 kgD) 10 kg

Correct Answer: B) 2 kg
Explanation: m = F/a = 10/5 = 2 kg

Question 13

What is the energy transferred to an object when a force of 20 N is applied over a distance of 10 m?

A) 100 JB) 200 JC) 400 JD) 800 J

Correct Answer: B) 200 J
Explanation: Work = F × d = 20 × 10 = 200 J

Question 14

An object is moving in a circular path with a constant speed. What is the direction of the acceleration?

A) Towards the centerB) Away from the centerC) TangentialD) Radial

Correct Answer: A) Towards the center
Explanation: Centripetal acceleration always points to the center.

Question 15

What is the velocity of an object that has been accelerated from rest at 5 m/s² for 4 seconds?

A) 10 m/sB) 15 m/sC) 20 m/sD) 25 m/s

Correct Answer: C) 20 m/s
Explanation: v = u + at = 0 + 5×4 = 20 m/s

Question 16

A force of 50 N is applied to an object, causing it to accelerate at 10 m/s². What is the mass of the object?

A) 2 kgB) 5 kgC) 10 kgD) 20 kg

Correct Answer: B) 5 kg
Explanation: m = F/a = 50/10 = 5 kg

Question 17

What is the kinetic energy of an object of mass 10 kg moving with a velocity of 5 m/s?

A) 25 JB) 50 JC) 100 JD) 125 J

Correct Answer: D) 125 J
Explanation: KE = 1/2 mv² = 0.5 × 10 × 25 = 125 J

Question 18

An object is moving in a circular path with a constant speed. What is the work done by the centripetal force?

A) PositiveB) NegativeC) ZeroD) Infinite

Correct Answer: C) Zero
Explanation: Force is perpendicular to displacement, so W = Fdcos90 = 0

Question 19

A force of 20 N is applied to an object, causing it to move with an acceleration of 4 m/s². What is the mass of the object?

A) 2 kgB) 4 kgC) 5 kgD) 10 kg

Correct Answer: C) 5 kg
Explanation: m = F/a = 20/4 = 5 kg

Question 20

What is the potential energy of an object of mass 10 kg at a height of 5 m? (g=9.8)

A) 50 JB) 100 JC) 200 JD) 490 J

Correct Answer: D) 490 J
Explanation: PE = mgh = 10 × 9.8 × 5 = 490 J

Question 21

An object is moving with a velocity of 10 m/s. If it is subjected to a uniform acceleration of 2 m/s², what will be its velocity after 4 seconds?

A) 10 m/sB) 12 m/sC) 14 m/sD) 18 m/s

Correct Answer: D) 18 m/s
Explanation: v = u + at = 10 + 2×4 = 18 m/s

Question 22

A force of 30 N is applied to an object, causing it to move with an acceleration of 6 m/s². What is the mass of the object?

A) 2 kgB) 5 kgC) 10 kgD) 15 kg

Correct Answer: B) 5 kg
Explanation: m = F/a = 30/6 = 5 kg

Question 23

What is the kinetic energy of an object of mass 20 kg moving with a velocity of 10 m/s?

A) 50 JB) 100 JC) 500 JD) 1000 J

Correct Answer: D) 1000 J
Explanation: KE = 1/2 mv² = 0.5 × 20 × 100 = 1000 J

Question 24

An object is moving in a circular path with a constant speed. What is the direction of the velocity?

A) Towards the centerB) Away from the centerC) Tangential to the circleD) Radial to the circle

Correct Answer: C) Tangential to the circle
Explanation: Velocity is always tangent to the circular path.

Question 25

A force of 40 N is applied to an object, causing it to move with an acceleration of 8 m/s². What is the mass of the object?

A) 2 kgB) 5 kgC) 10 kgD) 20 kg

Correct Answer: B) 5 kg
Explanation: m = F/a = 40/8 = 5 kg

🎉 Test Completed!

Correct: 0 / 25

Wrong: 0 / 25

Final Score: 0%