Assumptions for Equations of Motions

Q.

A body whose speed is constant

(a) must be accelerated

(b) might be accelerated

(c) has a constant velocity

(d) cannot be accelerated

Q.

A particle with uniform acceleration in a striaght line, has velocity v m/s at a position x metre given as . Its acceleration is:

1. -8 m/s²

2. 8 m/s²

3. 14 m/s²

4. 16 m/s²

Q.

The velocity of a body at the end of 5 sec is 30m/s, at the end of 12sec is 58 m/s and at the end of 22 sec it is 98 m/s. The body is moving with

Uniform velocity

Uniform acceleration

Uniform retardation

Uniform displacement

Q. When a traffic light turns green a car moves with a constant acceleration of 2m/s square . At the same time a truck moves with a constant speed of 10m/s , overtakes and passes the car
A) how far beyond the starting point will the car over take the truck.
B) how fast will the car be traveling at that instance

Q. An object is moving with uniform acceleration a and its initial velocity is u. After time t, its velocity v is given by .

1. v = u + a$t^2$
2. v = u + at
3. v = u + ½a$t^2$
4. v = u + a

Q. A body is moving with a velocity of 10m/s .if the motion is uniform.what will be the velocity after 10 sec

Q.

Use the following information to answer the next question.

A bus accelerates uniformly from 15 m/s to 20 m/s in 6 s.

What is the distance covered by the bus during its acceleration?

1. 75 m

2. 90 m

3. 105 m

4. 185 m

Q.

When you will say a body is in

uniform accleration

non uniform accleration

Q.

A car has initial velocity of 5 m/s is increasing its acceleration uniformly by 2 m/s2. At what distance will be the car after 12 seconds ?

Q. A train is moving with uniform acceleration. The two ends of the train pass through a point on the track with velocity v1 and v2. With what velocity the middle point of train would pass through the same point

Q. The equations of motion are applicable in which of the following conditions?

1. Non-uniform acceleration
2. Continuously increasing acceleration
3. Continuously decreasing acceleration
4. Uniform acceleration

Q. A body is moving with an intial velocity of u. If the body never accelerated, its velocity after t seconds is given by .

1. -u
2. ut
3. -ut
4. u

Q. The slope of the velocity - time graph provides displacement.

1. True
2. False

Q. Velocity of an object in uniform circular motion is constant.

1. False
2. True

Q. A car starts from rest. At t=1 s, it attains a speed of 5m/s. At t=2s, the speed becomes 15 m/s. The car is undergoing uniform acceleration.

1. True
2. False

Q. Equations of motion are developed for objects having__________.

1. constant acceleration
2. constant velocity
3. constant speed
4. varying time

Q. The equations of motion are developed for objects having constant acceleration and undergoing one dimensional motion.

1. True
2. False

Q. An object thrown vertically upwards, rises to a maximum height of $10\text{m}$. What is the velocity with which it is thrown upwards? (Take $\text{g}=9.8\text{m}{\text{s}}^{-2}$)

1. 14

Q. Tap the correct pair

1. $S=ut+\frac{1}{2}a{t}^2$
2. $v=u+at$
3. $v^2=u^2+2as$
4. First equation
5. Second equation
6. Third equation

Q. A particle moving with a velocity v changes its direction of motion by an angle theta without change in speed, then how themagnitude of change in velocity is 2vsin(θ/2)

Q. Uniform circular motion is an non-accelerated motion.

1. True
2. False