ECAT Pre Engineering Physics Chapter 3 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 3 Motion and Force

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Physics ECAT Pre Engineering Chapter 3 Motion and Force

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Question # 1

A car travels first half distance between two places with a speed of 30 km/h and remaining half with a speed of 50 km/h. The average speed of the car is

Question # 2

When brakes are applied to a fast moving car, the passenger will be thrown:

Question # 3

Which of the following is not a projectile

Question # 4

The vertical component of velocity of a projectile during its motion is minimum

Question # 5

In velocity of a particle at an instant is 10 m/s and after 5s the velocity of the particle is 20 m/s. The velocity 3s before in m/s is

Question # 6

An object is dropped from a height of 100 m. Its velocity at the moment it touches the ground is:

Question # 7

An inertial frame of reference is that frame of reference in which

Question # 8

The discuss used by athlete has a mass of 1 kg, its weight in newton is

Question # 9

At the top of the trajectory of a projectile the acceleration is

Question # 10

The instantaneous velocity is define as the limiting value of Δd/Δt on the time intervalΔt approaches to

Question # 11

The second law gives the relationship between

Question # 12

Slope of velocity time graph represents:

Question # 13

A train is moving with a velocity of 25 m/s and a car is moving behind it by a velocity of 8 m/s in same direction. The relative velocity of train with respect to car is

Question # 14

Blomass includes:

Question # 15

Acceleration in a body is always produced in the directin of:

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ECAT Physics Chapter 3 Important MCQ's

Sr.# Question Answer
1 An aircraft is moving with a velocity of 300 ms-1. If all the forces acting on it are balanced, then
A. It still moves with the same velocity
B. It will be just floating at the same point in space
C. It will be fall down instantaneously
D. It will lose its velocity gradually
2 Suppose the water flows out from a pipe at 3kg s-1and its velocity changes from 5m s-1to zero on striking the wall, then the force exerted by water on wall will be
A. 5 N
B. 10 N
C. 15 N
D. 20 N
3 A body starting from rest covers a distance of 0.45 Km and acquires a velocity of 300 Kmh-1. its acceleration will be
A. 7.71 m s-2
B. 0.5m s-2
C. 0.15m s-2
D. 0.092m s-2
4 The entity which measures the quantity of motion in a body is called
A. force
B. energy
C. momentum
D. power
5 If the acceleration of a body is negative, then slope of the velocity-time graph will be:
A. Zero
B. Positive
C. Negative
D. Infinity
6 Which quantity has the same units as impulse
A. force
B. work
C. linear momentum
D. acceleration
7 A lift is descending at a constant speed V. A passenger in the lift drops a coin. The acceleration of the coin towards the floor will be
A. Zero
B. g
C. -g
D. V + g
8 Which of the following four statements is false?
A. A body can have zero velocity and still be accelerated
B. A body can have a constant velocity and still have a varying speed
C. A body can have a constant speed and still have a varying velocity
D. The direction of the velocity of a body can change when its acceleration is constant
9 A typical rocket consumes about
A. 100 kg s-1of fuel
B. 1000 kg s-1of fuel
C. 10000 kg s-1of fuel
D. 100000 kg s-1of fuel
10 The vertical component of velocity of a projectile during its motion is minimum
A. at the time of projection
B. at the highest point
C. just before hitting the plane of projection
D. all of them

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