Calculating Net Force, Speed and Density

How much force is needed to accelerate a 25kg bowling ball at 2m/s². 

• 50N
• 5N
• 12.5N
• 100N

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A 50 kg skater pushed by a friend accelerates 5 m/sec².  How much force did the friend apply?

• 45 N
• 15 N 
• 10 N
• 250 N

Tags

NGSS.MS-PS2-2

A force of 250 N is applied to an object that accelerates at a rate of 5 m/sec².  What is the mass of the object?

• 100kg 
• 1,250kg
• 50kg
• 5kg

Tags

NGSS.MS-PS2-2

What is the mass of an object that requires a force of 25 N to accelerate at 5 m/s²? ____ kg

Tags

NGSS.MS-PS2-2

A student uses a magnet to move a 0.025 kg metal ball. The magnet exerts a force of 5 N, which causes the ball to begin moving. What is the acceleration of the ball when it begins to move? ____ m/s²

Tags

NGSS.MS-PS2-2

After 0.5 seconds, the blue car had traveled 2 meters across the floor. What is the average speed of the blue car in m/sec?

• 0.25 m/sec

• 0.25 cm/sec

• 2.5 m/sec

• 4 m/sec

The yellow car traveled 2 meters in 30 minutes. What is the average speed of the yellow car in m/hr?

• 0.06 m/hr

• 0.6 m/hr

• 4 m/hr

• 15 m/hr

Tags

NGSS.MS-PS3-1

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

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

What is the speed of a car that travels 400 m in 20 minutes?

• 20 miles/hr
• 20 m/min
• 800 m/min
• 200 miles/hr

An eraser 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