Force, Mass, Acceleration (Flashcardizz)

Front

Aria wants to accelerate a 25kg bowling ball at 2m/s². How much force is needed?

Back

50N

Answer explanation

To find the force, use Newton's second law: F = m * a. Here, m = 25kg and a = 2m/s². Thus, F = 25kg * 2m/s² = 50N. Therefore, the correct answer is 50N.

Front

Maya is flying a kite that weighs 2kg, and the wind pushes it with a force of 2N. How fast does the kite accelerate?

Back

1 m/s²

Answer explanation

To find the acceleration, use Newton's second law: F = ma. Here, F = 2N and m = 2kg. Rearranging gives a = F/m = 2N/2kg = 1 m/s². Thus, the bird accelerates at 1 m/s².

Front

A book will remain on the table unless a balanced force acts upon it.

Back

False

Answer explanation

The statement is false because an object will remain at rest unless an unbalanced force acts upon it, according to Newton's first law of motion. A balanced force does not change the object's state of motion.

Front

According to Newton's law of motion, what is the equation relating force, mass, and acceleration?

Back

F = M x A

Answer explanation

Newton's second law states that force (F) equals mass (M) times acceleration (A), represented by the equation F = M x A. This shows how these three quantities are interrelated, making this the correct choice.

Front

During a physics experiment, Evelyn measures the acceleration of a toy car. Acceleration is measured in which unit?

Back

m/s^2

Answer explanation

Acceleration is defined as the rate of change of velocity per unit time, which is measured in meters per second squared (m/s²). This makes m/s² the correct choice for measuring acceleration.

Front

When calculating motion, the only time Ethan multiplies is when he is finding ......

Back

Force

Answer explanation

When calculating motion, you multiply to find force using Newton's second law (F = ma). This shows that force is directly related to mass and acceleration, making it the correct choice for when multiplication is involved.

Front

Priya is holding a box with two forces acting on it: 4 N downwards and 10 N downwards. What is the magnitude (size) and direction of the net force?

Back

14 N Down

Answer explanation

The net force is calculated by considering all forces acting on the object. If the downward forces exceed the upward forces by 14 N, the net force is 14 N Down, making this the correct choice.

Front

Avery and Michael are pushing a car in the SAME direction. To find the total force they exert, you would ...?

Back

Add the forces

Answer explanation

When two forces act in the same direction, their effects combine. Therefore, you would add the forces together to find the total force acting in that direction, making the correct choice to add the forces.

Front

Hannah places a book on a table, and the forces acting on it are balanced. If the net force is 0, the book will...

Back

STAY the SAME, NOT Move

Answer explanation

If the net force is 0, the object will not experience any change in motion. This means it will stay at rest or continue moving at a constant velocity, hence the correct choice is 'STAY the SAME, NOT Move'.

Front

Emma is pushing a box with a force of 10 N to the right, while Sophia is pulling it with a force of 7 N to the left. What is the net force?

Back

3 N Right

Answer explanation

To find the net force, we subtract the left forces from the right forces. If the right force is 20 N and the left force is 17 N, the net force is 3 N Right, making the correct answer 3 N Right.