Question

 A car starts from rest on a circular curve of radius 250 m and accelerates at a constant tangential acceleration of 1.2 Determine velocity. (CO5) *

a. 13 m/s

b. 17 m/s

c. 15 m/s

d. 19 m/s
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Answer 1

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Answer 2

Answer:

The velocity of the car is 17 m/s i.e.option(b).

Explanation:

We will use the following formulas to solve this question,

$a=\frac{v^2}{r}$        (1)

Where,

a=tangentilal acceleration

v=velocity with which the car is moving

r=radius of the circular track

From the question we have,

r=250m

a=1.2m/s²

By substituting the value of a and r in equation (1) we get;

$1.2=\frac{v^2}{250}$

$v^2=1.2\times 250$

$v=\sqrt{300}$

$v=17.32\approx 17m/s$

Hence, the velocity of the car is 17 m/s i.e.option(b).