Force Flashcard #1 Review

Front

What is the direction of the frictional force when a cart rolls down an inclined plane with constant speed?

Back

The frictional force acts up the incline, opposing the motion of the cart.

Front

How do you calculate the mass of an object if you know the net force and acceleration?

Back

Use Newton's second law: F = m * a, where F is the net force, m is the mass, and a is the acceleration. Rearranging gives m = F / a.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object and remains constant regardless of location. Weight is the force exerted by gravity on that mass and can change based on the gravitational field.

Front

If a child exerts a force of 100 N on an object, what force does the object exert back on the child?

Back

According to Newton's third law, the object exerts an equal and opposite force of 100 N back on the child.

Front

On which surface would a car experience the greatest force of friction when sliding to a stop?

Back

The greatest force of friction occurs on dry concrete.

Front

What is Newton's first law of motion?

Back

An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by a net external force.

Front

What is the formula for calculating weight?

Back

Weight (W) is calculated using the formula W = m * g, where m is mass and g is the acceleration due to gravity.

Front

What happens to the weight of an object when it is taken from Earth to the Moon?

Back

The weight decreases because the gravitational pull on the Moon is less than that on Earth, but the mass remains the same.

Front

What is the role of friction in motion?

Back

Friction opposes the relative motion between two surfaces in contact, affecting acceleration and deceleration.

Front

How does the acceleration of an object relate to the net force acting on it?

Back

Acceleration is directly proportional to the net force acting on an object and inversely proportional to its mass (a = F/m).