Physics Past Questions and Answers

Which of the following units is equivalent to kgms^-1?

A Ns^-1
B Nms^-1
C Ns
D Js^-1

Question 2:

Which of the following units is equivalent to kgms^-1?

A Ns^-1
B Nms^-1
C Ns
D Js^-1

Question 3:

A jet engine develops a thrust of 270Ns when the velocity of the exhaust gases relative to the engine is 300ms^-1. What is the mass of the material ejected per second?

A 81.00kg
B 9.00kg
C 0.90kg
D 0.09kg

Question 4:

A man walks 8km north and then 5km in a direction 60^o east of north. Find the distance from his starting point

A 11.36km
B 12.36km
C 13.00km
D 14.36km

Question 5:

An elevator of mass 4800kg is supported by a cable which can safely withstand a maximum tension of 60 000N. The maximum upward acceleration the elevator can have is

A 2.5ms^-2
B 5.0ms^-2
C 7.5ms^-2
D 10.0ms^-2