Speed is v = d/t
Or speed is distance over time
So...
40min / 60min = 0.6667 or 2/3 --> Finding what proportion 40 minutes is to an hour or 60 minutes as we need the units of hours to match up
45km/h = d/0.6667h
d = (45)(0.667)
d = 30.0015 or 30km
Work = force x distance
= 100N (force) x 0.5m (distance)
= 50J
Carbon-14 has a relatively small half life of 5,730 years
Answer:
5.37 m/s
0.98 seconds
Explanation:
t = Time taken
u = Initial velocity
v = Final velocity
s = Displacement
a = Acceleration due to gravity = 9.81 m/s²

Velocity of the ball when it passes an observer sitting at a window is 5.37 m/s

Time taken by the ball to pass the observer sitting at a window is 0.98 seconds