Solveeit Logo
Login

Question

Question: Which of the following changes when a particle is moving with uniform velocity, the average velocity...

Which of the following changes when a particle is moving with uniform velocity, the average velocity of the object between t = 2 s and t = 4 s is

A

5 m s-1

B

10 m s -1

C

15 m s-1

D

20 m s-1

Answer

15 m s-1

Explanation

Solution

Average velocity, v‾=(x)t=4−(x)t=24−2\overline{v} = \frac{(x)_{t = 4} - (x)_{t = 2}}{4 - 2}

v‾=(a+b(4)2)−(a+b(2)2)4−2=(a+16b)−(a+4b)4−2=6b=6(2.5)ms−1=15ms−1\overline{v} = \frac{(a + b(4)^{2}) - (a + b(2)^{2})}{4 - 2} = \frac{(a + 16b) - (a + 4b)}{4 - 2} = 6b = 6(2.5)ms^{- 1} = 15ms^{- 1}