Advertisements
Advertisements
Question
From the given v-t graph it can be inferred that an object is
Options
in uniform motion
at rest
in non - uniform motion
moving with uniform accelerations
Advertisements
Solution
moving with uniform accelerations
APPEARS IN
RELATED QUESTIONS
Give a scientific reason.
When an object falls freely to the ground, its acceleration is uniform.
What is meant by the term retardation? Name its S.I. unit.
Define the term acceleration due to gravity. State its average value.
State the type of motion represented by the following sketches in Figures.
Give an example of each type of motion.
Figure given below shows a velocity-time graph for a car starting from rest. The graph has three parts AB, BC and CD.
(a) Is the magnitude of acceleration higher or lower than that of retardation ? Give a reason .
(b) Compare the magnitude of acceleration and retardation .
A bullet initially moving with a velocity 20 m/s strikes a target and comes to rest after penetrating a distance 10 cm into the target. Calculate the retardation caused by the target.
State its value in C.G.S. as well as in S.I. system.
A cyclist driving at 36 kmh−1 stops his motion in 2 s, by the application of brakes. Calculate
- retardation
- distance covered during the application of brakes.
Can you use the relation [B1]?
The initial velocity of a car is 10 ms-1. It moves with an acceleration of 2 ms-2. What will be its speed after 10 seconds?
Interpret the following graph:
The rate of change of velocity is ______.
A car starts from rest and it is travelling with a velocity of 20 m/s in 10 s. What is its acceleration?
Negative acceleration is called ______.
State whether true or false. If false, correct the statement.
Acceleration can get negative value also.
Exercise Problem.
A racing car has a uniform acceleration of 4 ms–2. What distance it covers in 10 s after the start?
The Unit of acceleration is ______.
When an object undergoes acceleration ______.
A boy throws a ball up and catches it when the ball falls back. In which part of the motion the ball is accelerating?
Acceleration is a scalar.
