PHYSICAL SCIENCE BENCHMARK 1 REVIEW PART 2

Which situation shows a measurement of velocity?

• A student drives around the block at 35 miles per hour back to their original position.

• An athlete runs in place at 5 kilometers per hour.

• A man runs to the north at 6 miles per hour and then walks to the east at 2.5 miles per hour.

• A child jumps rope in place at 65 jumps per minute.

Which of the following is NOT a reason why the velocity of a moving object is found by calculating the speed of the object and the direction that it is traveling?

• Velocity describes the rate at which an object changes position.

• The velocity of an object changes when the direction an object is traveling changes regardless of whether or not the speed changes.

• Velocity is a vector quantity.

• Velocity is a scalar quantity that describes how fast an object is moving.

Which of the following statements is true? I. Speed without directional change does not show velocity. II. Velocity is a scalar quantity; describes how fast an object is moving. III. Velocity refers to the rate at which an object changes position. IV. Velocity changes as the direction changes. V. Speed is always recorded as a number and a direction.

• I, II, and III

• I, II, and IV

• I, III, and IV

• II, III, and IV

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which statement identifies a key difference between the speed of an object and its velocity?

• Speed is a scalar quantity that refers to the rate at which an object changes position, whereas velocity is a vector quantity referring to how fast it changes its acceleration.

• Speed is a vector quantity that refers to the rate at which an object changes position with respect to time, whereas velocity is a scalar quantity that refers to the average rate at which the object changes position.

• Speed is a vector quantity that refers to how fast an object moves per unit time, whereas an object's velocity is a scalar quantity that refers to the rate at which it changes momentum.

• Speed is a scalar quantity that refers to the rate at which an object moves a distance, whereas the velocity of an object is a vector quantity that refers to how fast an object changes its direction.

The velocity-time graphs of four different moving objects are shown. Which graph shows an object moving with a constant acceleration?

• 
• 
• 
• 

An airplane moving towards the west travels 275 km in 30 minutes. Which option correctly identifies the speed and velocity of the airplane?

• Speed = 550 km/h, Velocity = 550 km/h, west

• Speed = 550 km/h, west, Velocity = 550 km/h, west

• Speed = 9.17 km/h, Velocity = 9.17 km/h, west

• Speed = 9.17 km/h, west, Velocity = 9.17 km/h

"For every action there is an equal and opposite reaction." Which of Newton's laws of motion is defined?

• 4th

• 1st

• 3rd

• 2nd

Tags

NGSS.MS-PS2-1

To travel on his skateboard, Cole uses which of Newton's Laws of Motion?

• 1st

• 2nd

• 3rd

• 4th

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

A student reads one of Newton's laws of motion. "An object at rest tends to remain at rest unless acted upon by an outside force." Which of Newton’s laws of motion is defined?

• 1st

• 4th

• 2nd

• 3rd

Motion is described by an object's —

• direction and speed

• force and mass

• speed and force

• direction and mass

Tags

NGSS.MS-PS3-1