Question

If the displacement of an object is proportional to the square of time, then the object is moving with:
a) uniform velocity
(b) uniform acceleration
c) increasing acceleration
(d) decreasing acceleration
Four cars A, B, C and D are moving on a levelled, straight road. Their distance-time
TATLaftefing is the correct statement​

Answer 1

Answer:

At point B it encounters an incline with coefficient of kinetic ... The block makes it up the incline to a second flat frictionless surface. What is the work done by friction?

Answer 2

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Object moves with Uniform Acceleration.

EXPLANATION

Displacement is proportional to square of time

⠀⠀⠀⠀⠀⠀⠀⠀⠀s ∝ t²

⠀⠀⠀⠀⠀⠀⠀⠀⠀s = kt²

⠀⠀⠀ , where k is constant of proportionality.

Differentiating Displacement , we get Velocity (v)

⠀⠀⠀⠀⠀⠀⠀ ds/dt = 2kt

Differentiating Velocity , we get Acceleration (a)

⠀⠀⠀⠀⠀⠀ dv/dt = 2k = constant.

ᗇ So, object moves with Constant Acceleration.