Science 10 physics quiz

A rollercoaster travels at a speed of 32.0 m/s. Convert the rollercoaster’s speed into km/h.

• 8.89 km/h

• 115 km/h

• 3.20 x 10⁴ km/h

• 1.15 x 10⁵ km/h

Which of the following lists includes only vector quantities?

• speed, distance, time

• speed, displacement, time

• velocity, distance, acceleration

• velocity, displacement, acceleration

If Anthony walks 1.7 km north from his house and then travels 5.4 km south, his displacement is

• 3.7 km south

• 3.7 km north

• 7.1 km south

• 7.1 km north

Calee runs at a uniform speed of 9.89 m/s over a distance of 1.4 km. With correct significant digits, how long did it take Calee to run this distance?

• 143 s

• 1.4 x 10² s

• 1.4 x 10^-1 s

• 0.143 s

A train accelerates from 1.59 m/s to a speed of 6.39 m/s over 1.57 s. The rate of acceleration during this time is

• + 3.06 m/s²

• – 3.06 m/s²

• + 5.08 m/s²

• – 5.08 m/s²

While Abdul is nervous about his practice exam, he walks around the classroom: 26 m [S], then 6 m [N] to deal with his stress. If Abdul paces for a total of 9.0 s, his average velocity is

• 0.45 m/s N

• 0.63 m/s N

• 1.6 m/s S

• 2.2 m/s S

An automobile engine uses gasoline and in the process of burning the gasoline, a lot of “waste” heat is generated by the engine, this can be explained by

• kinetic energy

• potential energy

• first law of thermodynamics

• second law of thermodynamics

The graph that should a constant positive speed is:

• 1

• 2

• 3

Graph 3 shows

• acceleration

• constant positive speed

• moving backwards

• no motion

Saqib uses a wheelbarrow to move soil into his garden. He exerts an average force of 165 N while pushing the wheelbarrow and does 6.4 J of work during each load. How far is he moving the soil during each load?

• 39 m

• 26 m

• 0.039 m

• 0.026 m