11/11 DONW LIVE 8.6C WHICH LAW OF MOTION

A frog leaping upward off his lily pad is pulled downwards by gravity and lands on another lily pad instead of continuing in a straight line.

• 1st law

• 2nd law

• 3rd law

As the fuel in a rocket ignites, the force of the gas expansion and explosion pushes out the back of the rocket and pushes the rocket forward.

• 1st law

• 2nd law

• 3rd law

After you start up your motorbike, as you give it more gas, it goes faster.

• 1st law

• 2nd law

• 3rd law

As an ice skater pushes harder with his leg muscles, he begins moving faster.

• 1st law

• 2nd law

• 3rd law

When Jasmine, age 5, and her dad are skipping pebbles on the pond, the pebbles that Jasmine's dad throws go farther and faster than hers.

• 1st law

• 2nd law

• 3rd law

Two skaters begin at rest. Skater 1 has a smaller mass than Skater 2. After they push off each other,...

• Skater 1 experiences a greater change in momentum
• Skater 2 experiences a greater change in momentum
• Skater 1 has a greater velocity than Skater 2
• Skater 1 experiences a greater force

When a cannon fires a cannonball we observe Newton's third law. Which force is the reaction force?

• The cannon moving forward
• The cannonball moving forward
• The cannon moving backward
• The cannonball moving backward

Looking at the image. Decide if this is balanced or unbalanced.

• Unbalanced

• Balanced

  A basketball with a mass of 0.60 kg is accelerated with a force of 10.8 N.  If resisting forces are ignored, what is the acceleration of the basketball to the nearest m/s²?

• 0.06 N
• 6.48 m/s²
• 18 N
• 18 m/s²

   When a space shuttle was launched, the astronauts onboard experienced an acceleration of 29.0 m/s².  If one of the astronauts had a mass of 60.0 kg, what net force in newtons did the astronaut experience?

• 1740 m/s²
• 1740 N
• 2.07 N
• .48 N