Measurements and Mechanics Quiz

4.5 Mm represents

• 45 metres

• 4,500,000 metres

• 4.5 millimetres

• 45 millimetres

What is the approximate diameter of the sun?

• 10⁶ km

• 10³ km

• 10⁹ km

• 10¹² km

What is the prefix used to represent 10^-6?

• micro

• nano

• milli

• deci

The Vernier callipers are completely closed. What is the zero error?

• + 0.05 cm

• + 0.05 mm

• - 0.05 cm

• - 0.05 mm

What is the reading?

• 7.22 cm

• 7.72 cm

• 7.22 mm

• 7.72 mm

What is the equivalent of 9000 μm?

• 9 cm

• 0.009 m

• 0.009 mm

• 9000 Gm

What is the approximate number of people on planet earth?

• 7 x 10¹⁰

• 7 x 10⁷

• 7 x 10⁹

• 7 x 10¹¹

Even though a car is slowing down, it is still accelerating, in the most general definition of acceleration.

• True

• False

A ball is thrown into the air. At the highest point, the ball has zero velocity and zero acceleration.

• True

• False

Acceleration is defined as the CHANGE in 

• time it takes to move from one place to another place.

• velocity of an object

• distance divided by the time interval

• velocity divided by the time interval