Science
Motion & Newton's Laws
Grade 8 · Middle School
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- Question 1 of 20Easy
The quantity that describes the distance an object travels per unit time is ...
- Question 2 of 20Easy
Uniform linear motion is the motion of an object with ...
- Question 3 of 20Easy
Newton's First Law is also known as the law of ...
- Question 4 of 20Easy
The SI unit of force is the ...
- Question 5 of 20Easy
According to Newton's Second Law, the relationship between force (F), mass (m), and acceleration (a) is ...
- Question 6 of 20Easy
An example of a useful friction force is ...
- Question 7 of 20Medium
A car travels 120 m in 8 s. The car's average speed is ...
- Question 8 of 20Medium
A bus moves at 10 m/s, then accelerates at 2 m/s^2 for 5 s. The bus's final velocity is ...
- Question 9 of 20Medium
Passengers lurch forward when a bus suddenly brakes. This event follows ...
- Question 10 of 20Medium
A rocket can launch upward because it expels gas downward. This event follows ...
- Question 11 of 20Medium
An object of mass 5 kg is pushed with a force of 20 N. The object's acceleration is ...
- Question 12 of 20Medium
The friction force acting on a moving object is always ...
- Question 13 of 20Medium
A bicycle starts at 4 m/s and accelerates to 10 m/s in 3 s. The bicycle's acceleration is ...
- Question 14 of 20Medium
The weight of a 6 kg object where g = 10 m/s^2 is ...
- Question 15 of 20Hard
A car starts from rest and accelerates at 3 m/s^2 for 4 s. The distance the car travels is ...
- Question 16 of 20Hard
Two forces of 30 N and 10 N act on an object in opposite directions. The resultant force is ...
- Question 17 of 20Hard
A 4 kg object is pushed with a force of 25 N but experiences 5 N of friction. The object's acceleration is ...
- Question 18 of 20Hard
A plate on a tablecloth stays still when the cloth is yanked away quickly. This event follows ...
- Question 19 of 20Hard
A speed of 72 km/h is equal to ...
- Question 20 of 20Hard
A position-versus-time graph of an object is a straight line with constant slope. The graph shows that the object ...