Saturday school

What is the formula for density?

• density = mass x volume
• density = mass / volume
• density = mass + volume
• density = mass - volume

Frank has an eraser. It has a mass of 4g, and a volume of 2cm³. What is its density?

• 8 g/cm³
• 2 g/cm³
• 1/2 g/cm³
• 24 g/cm³

Frank has a paper clip. It has a mass of 9g and a volume of 3cm³. What is its density?

• 3 g/cm³
• 1/3 g/cm³
• 27 g/cm³
• 39 g/cm³

Formula for force

• F = m*a

• F = m/a

• F = d*a

• F = d/a

Are the forces balanced or unbalanced?

• Balanced

• Unbalanced

A car travels 30 miles/hr for 3 hours, calculate the distance it will travel

• 90 miles
• 10 miles
• 600 miles
• 90 km

A speed boat travels 200 miles at a speed of 20 miles/hr. How much time will it take to travel the 200 miles?

• 10 hrs
• 10 miles
• 400 hrs
• 100 km

How much force is needed to accelerate a 3kg skateboard at 5m/s^2. 

• 8N
• 1.6N
• 0.6N
• 15N

The classes are playing tug of war. Barsoum’s room pulls to the left with a force of 45 N. Coach Camacho's room pulls to the right with a force of 50 N. What is the net force? And who won?

• 5N right. Coach Comacho's Class won.
• 5N Left. Barson's class won. 
• 95N and Coach Comacho's class won. 
• 95N and Barson's class won.

Calculate the net force of the object in the image shown.

• 20N
• 35N
• 5N
• 25N