- Give two ways the unit “meter per second per second” can be abbreviated.
- Write the equation for Newton’ second law that you would use in each of the following scenarios. Let F = force, m = mass, and a = acceleration:
b. You know mass and force and want to find the acceleration.
c. You know force and acceleration and want to find the mass.
- Dani and Gina are pushing on a box. Dani pushes with 250 N of force and Gina pushes with 100 N of force.
b. What is the net force if they push in opposite directions?
- What is the net force required to accelerate a 1,000-kg car at 3 m/sec2?
- You pull your little cousin in a wagon. You must pull with a net force of 50 N to accelerate her at 2 m/sec2. What’s her mass?
- When a 10-kg object is in free fall, it feels a force of 98 N. What is its acceleration?
- How many newtons does a 5-kg backpack weigh on Earth?
- How many newtons does a 5-kg backpack weigh on the moon? (g on the moon is 1.9 m/s2)
- Aya’s mass is 45 kg. What is her weight in newtons on Earth?
- What is Aya’s mass on the moon?
- What is Aya’s weight in Newtons on the moon?