Uniform Motion

Question 1

What are scalar quantities?

Answer 1

Scalar quantities are quantities that have magnitude only, and don’t have direction

Question 2

What are vector quantities?

Answer 2

Vector quantities are quantities that have magnitude and direction.

Question 3

Difference between distance and displacement?

Answer 3

Distance is how far an object travels over a period of time, whereas displacement is the change in position of an object as well as the direction of its movement over a period of time.

Question 4

Give 5 examples of a scalar quantity and a vector quantity?

Answer 4

Time, speed, mass, age and distance are examples of scalar quantities, whereas force, acceleration, speed, velocity and momentum are examples of vector quantities.

Question 5

Define speed and average speed, along with its formula.

Answer 5

Speed is a measure of how fast an object is moving. Average speed is the distance travelled per unit of time. v = d/t

Question 6

Define velocity along with its formula.

Answer 6

Velocity is speed in a particular direction. Average velocity is the rate of change of displacement. v = s/t

Question 7

Tom has seen Jerry. He quietly follows Jerry 2.50 m north before Jerry sees him. Jerry, who is trapped in a corner, runs south past Tom. Tom turns and runs 3.20 m south, only for Jerry to escape behind a cupboard. What was Tom’s distance travelled and displacement?

Answer 7

Distance = 4.70m and displacement = 0.700m south.