43
An object is projected with a velocity of 80ms-1 at an angle of 30o to the horizontal.The maximum height reached is
- A. 20m
- B. 80m
- C. 160m
- D. 320m
44
A boat travels due east at a speed 40ms-1s across a river flow due south at 30ms-1s. What is the resultant speed of the boat?
- A. 1.3ms-1
- B. 10.0ms-1
- C. 50.0ms-1
- D. 70.0ms-1
45
If it takes 5.0 hrs to drain a container of 540.0cm3 of water, what is the flow rate of water from the container in kg-1? [Density of water = 1000kgm-3]
- A. 32.5kg-1 s
- B. 31.5kg-1
- C. 30.8kg-1 s
- D. 30.0kg-1 s