cK12 Newton's Laws and 2D Motion

An object in motion will _______ if the sum of forces applied equals zero.

• stay in motion

• increase velocity

• decrease mass

• come to a rest

The SI units for force are...

• kilograms

• newtons

• meters per second

• pounds

If a hammer and nail are dropped from the same height at the same time, which object will hit the ground first?

• the hammer

• the nail

• the hammer and nail hit the ground at the same time.

• the object with the larger volume

A sled sliding on a flat, icy surface with a constant velocity is best described by

• Newton’s first law of motion for objects at rest.

• Newton’s first law of motion for objects in motion.

• Newton’s second law of motion.

• Newton’s third law of motion.

Pick two pairs of terms - one term describes magnitude alone while another term describes both magnitude and direction.

• mass, weight

• displacement, distance

• matter, antimatter

• speed, velocity

Acceleration is caused by a force acting on a mass.

• Newton’s first law of motion
• Newton’s second law of motion
• Newton’s third law of motion

Tags

NGSS.HS-PS2-1

For a force on an object there is an equal and opposite force.

• Newton’s first law of motion
• Newton’s second law of motion
• Newton’s third law of motion

Tags

NGSS.MS-PS2-1

If a force of 88 N is exerted on two balls in separate experiments, one with a mass of 0.50 kg and the other with a mass of 0.75 kg, which ball will have the greater acceleration?

• The one with a mass of .75 kg will have the greatest acceleration.

• The one with a mass of .50 kg will have the greatest acceleration.

• They will both accelerate at the same rate.

The masses of four vehicles and the net forces acting on them as they enter a highway are recorded in the table below. Which vehicle has the smallest acceleration as it enters the highway?

• Sedan

• Coupe

• SUV

• Truck

A student lets a toy car roll four times down a ramp. Each time the student covers the surface of the ramp with a different material. The student measures and records the time it takes the car to roll down the ramp. Which of these would be the best conclusion based on the data in the table?

• Different surfaces affect how fast a toy car accelerates.

• Different toy cars travel at different speeds.

• Gravity has little effect on the speed of toy cars on different surfaces.

• Air resistance is the greatest factor in limiting the acceleration of different toy cars.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1