Physics 30: Assignment 1 1
43
Marks
Total
ASSIGNMENT 1
Part One: Momentum and Newton’s Second Law
Part One of this assignment is worth 22 marks. The value of each question is noted
in parentheses in the left margin. Note: The answer areas will expand to fit the
length of your response.
1. Identify and explain if one of the objects in each of these pairs has a greater value for
the magnitude of its momentum than the other. (No calculations should be required.)
(1) a. a 900.0-kg truck travelling at 60 km/h, or a 500.0-kg car travelling at 60 km/h
Answer: Since both vehicles have the same velocity, the truck with the higher mass will have
higher momentum.
(1) b. a 15.0-kg object travelling to the right at 5.0 m/s, or a 15.0-kg object travelling
to the left at 5.0 m/s

(1) c. a 900-kg truck at rest, or a 500-kg car at rest

(1) d. a 900-kg truck at rest, or a mosquito flying at 2 m/s