Motion under gravity -MCQ-Basic

Motion under gravity -MCQ-Basic

Dear Readers,

Physics is an important subject in preparation for various Competitive exams.To keep a track of your preparation we have designed a small quiz of 10 Basic Level Questions on Motion under gravity . You have 10 minutes to solve the quiz, click the start timer button in order to start the timer and then click on submit button at the end to submit the quiz and view your scores and correct answers.

Q1. A particle when thrown, moves such that it passes from same height at 2 and 10s, the height is

•  g
•  2g
•  5g
•  8g

8g

Q2. A body thrown vertically upwards with an initial velocity u reaches maximum height in 6 seconds. The ratio of the distances travelled by the body in the first second and the seventh second is

•  1 : 1
•  11 : 1
•  1 : 2
•  1 : 11

11 : 1

Q3. A stone is thrown with an initial speed of 4.9 m/s from a bridge in vertically upward direction. It falls down in water after 2 sec. The height of the bridge is

•  4.9 m
•  9.8 m
•  19.8 m
•  24.7 m

9.8 m

Q4. A ball is dropped downwards. After 1 second another ball is dropped downwards from the same point. What is the distance between them after 3 seconds

•  25 m
•  20 m
•  50 m
•  9.8 m

25 m

Q5. A body is projected up with a speed ‘u’ and the time taken by it is T to reach the maximum height H. Pick out the correct statement

•  It reaches H/2 in T/2 sec
•  It acquires velocity u/2 in T/2 sec
•  Its velocity is u/2 at H/2
•  Same velocity at 2T

It acquires velocity u/2 in T/2 sec

Q6. P, Q and R are three balloons ascending with velocities U, 4U and 8U and respectively. If stones of the same mass be dropped from each, when they are at the same height, then

•  They reach the ground at the same time
•  Stone from P reaches the ground first
•  Stone from R reaches the ground first
•  Stone from Q reaches the ground first

Stone from P reaches the ground first

Q7. A body is released from the top of a tower of height h. It takes t sec to reach the ground. Where will be the ball after time

•  At h/2 from the ground
•  At h/4 from the ground
•  Depends upon mass and volume of the body
•  At 3h/4 from the ground

At 3h/4 from the ground

Q8.  A body is thrown vertically upwards. If air resistance is to be taken into account, then the time during which the body rises is

•  Equal to the time of fall
•  Less than the time of fall
•  Greater than the time of fall
•  Twice the time of fall

Less than the time of fall

Q9. A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time of

•  3 s
•  5 s
•  7 s
•  9 s

5 s

Q10. A stone thrown upwards with a velocity u reaches upto a height h. If the initial velocity is 2u the height attained would be

•  2h
•  4h
•  8h
•  16h

4h