Question

"The velocity of a diver just before hitting the water is -10.0 m/s, where the minus sign indicates that her motion is directly downward. What is her displacement during the last 1.16 s of the dive?

Answer 1

Answer:

Explanation:

Given

velocity of diver $u=-10\ m/s$ i.e. downward motion

acceleration due to gravity $a=g=-9.8\ m/s^2$

time $t=1.16\ s$

using equation of motion

$y=ut+\frac{1}{2}at^2$

$y=(-10)\cdot 1.16-\frac{1}{2}(-9.8)(1.16)^2$

$y=-11.6-6.593$

$y=-18.19\ m$

I.e. in downward direction