Physics Past Questions and Answers

A body is projected with an initial velocity U at an angle O to the horizontal. The time taken by it to reach its maximum height is given by the expression

A \(\frac{2u \text{sin}\theta}{g}\)
B \(\frac{u^2 \text{sin}^2\theta}{2g}\)
C \(\frac{u \text{sin}\theta}{g}\)
D \(\frac{u \text{sin}\theta}{2g}\)

Question 3847:

Which of the following statements describes a body in a stable equilibrium correctly?

A A person walking on a tight-rope
B Ball on a smooth horizontal table
C Ball resting on an inverted hemisphere bowl
D Ball in the middle of a nemispherical bowl

Question 3848:

In a school compound a girl walks 40km due east from the laboratory to the staff room to submit her report. Then she returns and walks 30m due north to her classroom. Determine the magnitude of her displacement from the10m laboratory

A 10m
B 35m
C 50m
D 70m

Question 3849:

Two strings each inclined at an angle 30o to the horizontal are used to hold a bucket of water weighing 20N. Calculate the tension i n each string.

A 20\(sqrt{3}\)N
B 20N
C 10\(sqrt{3}\)N
D 10N

Question 3850:

A bullet fired vertically upwards reaches a height of 500m. Neglecting air resistance, calculate the magnitude of the initial velocity of the bullet. [g = 10ms-2]

A 500.0ms-1
B 100.0ms-1
C 70.0ms-1
D 50.0ms-1