Physics Past Questions and Answers

Which of the following is the dimension for impulse?

A MLT\(^{-1}\)
B MLT\(^{-2}\)
C MLT
D ML

Question 3962:

A body accelerates uniformly from rest at 2\(ms^{-2}\). Calculate its velocity when it has travelled a distance of 9m.

A 3.0\(ms^{-1}\)
B 4.5\(ms^{-1}\)
C 6.0\(ms^{-1}\)
D 18.0\(ms^{-1}\)

Question 3963:

Which of the following statements about matter is not correct?

A Molecules of solids move more freely than molecules of liquids and gases
B Molecules of solids are more closely packed than those of liquids
C Energy is required to break the intermolecular forces of attraction between molecules
D Molecules of liquids move about within the liquid and they are in constant motion

Question 3964:

A ball is projected horizontally from the top of a tower. Neglecting air resistance, which of the following statements about its motion is/are correct?<br/>I. Vertical acceleration on the ball decreases as it falls<br/>II. The vertical force on the ball remains constant<br/>III. The vertical speed of the ball increases as it falls

A I only
B II only
C I and II only
D II and III only

Question 3965:

Two forces 100N and 60N act on an object of mass 10kg as illustrated in the diagram above. Neglecting friction, calculate the acceleration of the object.

A 4.0\(ms^{-2}\)
B 13.1\(ms^{-2}\)
C 16.0\(ms^{-2}\)
D 22.6\(ms^{-2}\)