Question

9) If the velocity of an object changed from 100 m/s to 700 m/s over a period of 1 minute, what would the average acceleration be?
1 meters per second squared
6 meters per second squared
10 meters per second squared
60 meters per second squared
600 meters per second squared

Answer 1

Answer:

Acceleration= 10m/s^2

GIVEN:

u (initial velocity) = 100m/s

v (final velocity) = 700m/s

t (time) = 1 min

= 60 sec

To find:

Acceleration

SOLUTION:

$v = 700 \: ms {}^{ - 1} \\ \\ u = 100 \: ms {}^{ - 1} \\ \\ t = 60 \: sec \\ \\ \\ v = u + at \\ \\ \: or \: \: \: 700 = 100 + a \times 60 \\ \\ or \: \: \: \: 700 - 100 = \: 60a \\ \\or \: \: \: 600 \: = 60a \\ \\ or \: a = \frac{600}{60} \\ \\ a = 10 \: ms {}^{ - 2}$

Here acceleration = 10m/s^2