Select the incorrect statement among the foll | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) $S_1$ is correct: If acceleration is zero,velocity is constant,which defines uniform motion.$S_2$ is correct: Constant speed implies constant magn

Vedclass · Accepted Answer

Only $S_4$

Vedclass · Answer

(A) $S_1$ is correct: If acceleration is zero,velocity is constant,which defines uniform motion.$S_2$ is correct: Constant speed implies constant magnitude of velocity,but direction may change (e.g.,circular motion),so it is not necessarily uniform motion.$S_3$ is correct: On a curved path,the direction of velocity changes continuously,which implies the presence of centripetal acceleration; thus,acceleration cannot be zero.$S_4$ is incorrect: Equal average velocities over successive intervals do not guarantee that the instantaneous velocity is constant at every point in time. For example,a particle could accelerate and decelerate within each interval such that the average remains the same,but the motion is non-uniform.

Similar Questions

For a particle showing motion under the force $F = -5(x - 2)^2$,the motion is .......

The relation between time $t$ and distance $x$ is $t = \alpha x^2 + \beta x$,where $\alpha$ and $\beta$ are constants. The relation between acceleration $a$ and velocity $v$ is:

State whether the following statements are true or false:
$(a)$ Velocity can change without a change in speed.
$(b)$ The total distance covered by a freely falling body in a given time is directly proportional to the time.
$(c)$ $A$ particle is a point object that possesses dimensions.

Vedclass Test Series

Exam Paper Generator

Online Exam Module