The Effect of Force on Objects Flashcard

Front

What happens to the acceleration of a car on a ramp if the mass of the car is increased, assuming the force applied remains constant?

Back

The acceleration decreases.

Tags

TEKS.SCI.5.7B

Front

What is the dependent variable in an experiment where a car is rolled down a ramp to measure how far it travels?

Back

The distance the car travels.

Tags

TEKS.SCI.5.7B

Front

What is the relationship between mass and acceleration when the force applied is constant?

Back

They are inversely proportional.

Answer explanation

According to Newton's second law, F = ma. When force (F) is constant, an increase in mass (m) results in a decrease in acceleration (a), indicating they are inversely proportional.

Front

If a car is placed on a ramp with a steeper incline, what effect does this have on the car's acceleration?

Back

The acceleration increases.

Answer explanation

A steeper incline increases the component of gravitational force acting along the ramp, leading to greater acceleration of the car. Therefore, the correct answer is that the acceleration increases.

Front

In an experiment with a balloon rocket, what would be considered the dependent variable?

Back

The distance the balloon travels.

Answer explanation

The dependent variable is what you measure in an experiment. In this case, the distance the balloon travels depends on factors like air amount and string type, making it the correct choice.

Front

If the mass of a car is doubled while the force applied remains the same, what happens to the car's acceleration?

Back

It halves.

Answer explanation

According to Newton's second law (F = ma), if the force remains constant and the mass is doubled, the acceleration must decrease. Specifically, it halves because acceleration is inversely proportional to mass.

Front

How does increasing the mass of an object affect its acceleration when the same force is applied?

Back

The acceleration decreases.

Answer explanation

According to Newton's second law, F = ma. If the mass increases while the force remains constant, the acceleration (a) must decrease, as a = F/m. Thus, the correct answer is that the acceleration decreases.

Front

Independent variable in an experiment testing the effect of incline angle on a car's speed?

Back

The incline angle of the ramp.

Answer explanation

The incline angle of the ramp is the independent variable because it is the factor being manipulated to observe its effect on the car's speed, which is the dependent variable.

Front

In an experiment testing the effect of force on a balloon rocket, what is the independent variable?

Back

The amount of air in the balloon.

Answer explanation

The independent variable is what you change in an experiment. In this case, the amount of air in the balloon affects the force exerted, making it the independent variable, while the other options are either constants or dependent variables.

Front

In an experiment with a car on a ramp, which of the following is a dependent variable?

Back

The time it takes for the car to reach the bottom.

Answer explanation

The dependent variable is what you measure in an experiment. In this case, the time it takes for the car to reach the bottom depends on the ramp's angle and the car's mass, making it the correct choice.