First slide

Average Acceleration

Question

The velocity versus time curve of a moving point is shown in Figure. The retardation is:

Easy

A

1 cm/sec²
B

2 cm/sec²
C

3 cm/sec²
D

4 cm/sec²

Solution

$Retardation = - \frac{∆ v}{∆ t} = - \frac{(0 - 60)}{(70 - 40)} = 2 cm / \sec^{2}$

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