Motion in a Straight Line Test

Result

Motion in a Straight Line Test - 40

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Weekly Quiz Competition

Question 1
4 / -1

A stone is shot straight upward with a speed of 20 m/sec from a tower 200 m high. The speed with which it strikes the ground is approximately

A
60 m/sec

B
65 m/sec

C
70 m/sec

D
75 m/sec

Solution
Question 2
4 / -1

A body freely falling from the rest has a velocity \'v\' after it falls through a height \'h\'. The distance it has to fall down for its velocity to become double, is

A
2 h

B
4 h

C
6 h

D
8 h

Solution
Question 3
4 / -1

A body thrown vertically upwards with an initial velocity u reaches maximum height in 6 sec. he ratio of the distances travelled by the body in the first second and the seventh second is

A
1 : 1

B
11 : 1

C
1 : 2

D
1 : 11

Solution
Question 4
4 / -1

A body thrown upwards with some velocity, reaches the maximum height of 20 m. Another body with double the mass thrown up, with double initial velocity will reach a maximum height of

A
200 m

B
16 m

C
80 m

D
40 m

Solution
Question 5
4 / -1

A balloon starts rising from the ground with an acceleration of 1.25 ms² after 8s, a stone is released from the balloon. The stone will (g = 10 ms²)

A
Reach the ground in 4 sec

B
Begin to move down after being released

C
Have a displacement of 50 m

D
Cover a distance of 40 m in reaching the ground

Solution
Question 6
4 / -1

A body is thrown vertically upwards with a velocity u. Fins the true statement from the following

A
Both velocity and acceleration are zero at its highest point

B
Velocity is maximum and acceleration is zero at the highest point

C
Velocity is maximum and acceleration is g downwards at its highest point

D
Velocity is zero at the highest point and maximum height reached is u²/2g

Solution
Question 7
4 / -1

A man throws a ball vertically upward and it rises through 20 m and returns to his hands. What was the initial velocity (u) of the ball and for how much time (T) it remained in the air (g = 10 m/s²)

A
u = 10 m/s, T = 2s

B
u = 10 m/s, T = 4s

C
u = 20 m/s, T = 2s

D
u = 20 m/s, T = 4s

Solution
Question 8
4 / -1

A particle when thrown, moves such that it passes from same height at 2 and 10 s, the height is

A
g

B
2g

C
5g

D
10g

Solution
Question 9
4 / -1

Two balls A and B of same masses are thrown from the top of the building. A, thrown upwards with velocity V and B, thrown downward with velocity V, then

A
Velocity of A is more than B at the ground

B
Velocity of B is more than A at the ground

C
Both A and B strike the ground with same velocity

D
None of the above

Solution
Question 10
4 / -1

A ball is dropped from top of a tower of 100 m height. Simultaneously another ball was thrown upward from bottom od the tower with a speed of 50 m/s (g = 10 m/s²) . They will cross each other

A
1 s

B
2 s

C
3 s

D
4 s

Solution