Author Question: If a car accelerates at a uniform 4.0 m/s2, how long will it take to reach a speed of 80 km/hr, ... (Read 48 times)

CQXA · **on:** Jul 29, 2018

If a car accelerates at a uniform 4.0 m/s2, how long will it take to reach a speed of 80 km/hr, starting from rest?

What will be an ideal response?

Question 2

Water, of density 1000 kg/m3, is flowing in a drainage channel of rectangular cross-section. The width of the channel is 15 m, the depth of the water is 8.0 m and the speed of the flow is 2.5 m/s. At what rate is water flowing in this channel?

A) 2.0 105 kg/s
B) 2.0 103 kg/s
C) 3.0 105 kg/s
D) 3.0 103 kg/s
E) 3.0 102 kg/s