Peanut ran 50 meters in 10 seconds.  What was Peanut's average speed?

• 2 m/s
• 5 km/h
• 5 m/s
• 5 m/s North

If we drop a steel sphere and a ping pong ball, the steel sphere will...

• hit the ground first because it has more mass
• hit the ground second because it takes longer to accelerate 
• hit the ground at the same time as the ping pong ball 

Tags

NGSS.HS-PS2-1

The force of __________________ is a type of friction that works against the motion of falling objects.

• Terminal Velocity
• Gravity
• Free Fall
• Air Resistance

The greater the mass of an object,

• the easier the object starts moving.

• the greater its inertia.

• the more balanced it is.

• the more space it takes up.

Tags

NGSS.HS-PS2-1

The momentum of an object is in the same direction as its

• force.

• velocity.

• acceleration.

• inertia.

Tags

NGSS.HS-PS2-2

The overall force on an object after all the forces are added together is called the

• balanced force

• unbalanced force

• net force

• centripetal force

Tags

NGSS.HS-PS2-1

The force of gravity between you and Earth is greater than the force of gravity between you and a car because Earth has more ____________________ than the car.

• mass

• density

• force

• friciton

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

A skydiver with a mass of 70 kg accelerates to Earth at a rate of 9.8 m/s2 due to gravity. What is the force on the skydiver?

• 79.8 Newtons

• 7.14 Newtons

• 0.14 Newtons

• 68.60 Newtons

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

The acceleration during the whole trip, on the horizontal component, is always...

• 0 m/s²

• 3.6 m/s²

• 5 m/s²

• -9.8 m/s²

Tags

NGSS.HS-PS2-1

In a projectile motion like the shown on the picture, the velocity with which the projectile hits the ground is...

• 0 m/s

• the same as the initial velocity

• unknown

• 9.8 m/s