Motion in a Straight Line Test

Result

Motion in a Straight Line Test - 42

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Weekly Quiz Competition

Question 1
4 / -1

A particle moving in a straight line covers half the distance with speed of 3 m/s. The other half of the distance is covered in two equal time intervals with speed f 4.5 m/s and 7.5 m/s respectively. The average speed of the particle during this motion is

A
4.0 m/s

B
5.0 m/s

C
5.5 m/s

D
4.8 m/s

Solution
Question 2
4 / -1

A particle is moving with constant acceleration from A to B in a straight line AB. If u and v are the velocities at A and B respectively, then its velocity at the mid-point C will be

A

B

C

D

Solution
Question 3
4 / -1

An aircraft is flying at a height of 3400 m above the ground. If the angle subtended at a ground observation point by the aircraft positions 10 s apart is 30^o, then the speed of the aircraft is

A
19.63 ms^–1

B
1963 ms^–1

C
108 ms^–1

D
196.3 ms^–1

Solution
Question 4
4 / -1

A particle starts from rest. Its acceleration (a) versus time (t) is as shown in the figure. The maximum speed of the particle will be

A
110 m/s

B
55 m/s

C
550 m/s

D
660 m/s

Solution
Question 5
4 / -1

A stone dropped from a building of height h and it reaches after t sec on earth. Form the same building if two stone are thrown (one upwards and other downwards) with the same velocity u and they reach the earth surface t₁ and t₂ sec respectively, then

A

B

C

D

Solution
Question 6
4 / -1

A ball is projected upwards from a height h above the surface of the earth with velocity v. The time at which the ball strikes the ground is

A

B

C

D

Solution
Question 7
4 / -1

A

B

C

D

Solution
Question 8
4 / -1

A particle located at x = 0 at time t = 0 starts moving along the positive x-direction with a velocity \'v\' that varies as v = α√x. The displacement of the particle varies with time as

A
t

B
t^1/2

C
t³

D
t²

Solution
Question 9
4 / -1

A ball is thrown vertically upwards. Which of the following graph/graphs represent velocity-time graph of the ball during its flight (sir resistance is neglected)?

A

B

C

D
Question 10
4 / -1

Figure given shows the distance-time graph of the motion of a car. It follows from the graph that the car is

A
At rest

B
In uniform motion

C
In non-uniform acceleration

D
Uniformly accelerated

Solution