C4U

What is Venus' mass?

0.81

What is the Venus' radius?

0.95

What is the orbital velocity on Mars?

2.9 km/s

As the mass increases the strength of a planets gravity...

Increases

Which planet do you think has the lowest escape velocity?

Mars

In what direction does gravity always pull the ball?

Toward the center of the Earth

What is the mass and radius of the planet with the strongest possible gravity?

Mass: 0 Radius: 1.2

Will the pitcher have to throw the ball faster or not as fast to send a ball into orbit around Venus?

Not as fast

What happens when the velocity of the ball is 7 km/s?

The ball completely revolves around the earth because

What do you notice when the velocity is 0 km/s?

The ball goes directly down toward the Earth's core

How does increasing the mass affect the gravity of the planet? How do you know?

The gravity of the planet increases because with more mass the ball travels less

What two forces cause objects to stay in orbit?

Gravity and velocity

Why does Earth have a stronger gravity then Venus?

It takes a stronger velocity to revolve around the Earth

How does gravity on Mars compared to Earth and Venus

Less gravity

Why does the pitcher have to throw the ball not as fast to send it into an orbit around Venus?

Less mass less gravity

What is the orbital velocity on Venus?

6.5 km/s

How does changing the radius affect the strength of a planet's gravity?

As the radius increases, the gravity of the planet decreases because the ball travels farther

As the radius increases the strength of a planets gravity...

Decreases

Which planet do you think has the stronger gravity Venus or Earth?

Earth