Advertisements
Advertisements
Question
If the displacement of an object is proportional to the square of time, then the object is moving with :
Options
uniform velocity
uniform acceleration
increasing acceleration
decreasing acceleration
Advertisements
Solution
uniform acceleration
We are given with the relationship that,
x = kt2
Differentiating it twice we get,
v = 2kt
a = 2k
Where,
v - velocity
a - acceleration
So, the answer is
(b) Uniform acceleration
RELATED QUESTIONS
Which of the following is true for displacement?
- It cannot be zero.
- Its magnitude is greater than the distance travelled by the object.
State whether distance is a scalar or a vector quantity.
When brakes are applied to a bus, retardation produced is 25 cm s-2 and the bus takes 20 s to stop. Calculate -
- The initial velocity of the bus
- The distance travelled by bus during this time.
Can distance covered by a body be less than the magnitude of its displacement?
Give the name of the physical quantity that corresponds to the rate of change of displacement.
A car travels at a uniform speed of 42 km/h. In 10 minutes, how much distance would it cover?
Name the physical quantity associated with the rate of change of displacement with time.
Displacement / Time : Velocity :: Speed / Time : ______.
Which of the following is correct?
In which of the following cases of motions, the distance moved and the magnitude of displacement are equal?
