Phy Sci 6 ed chap 11 Review

If a 0.65 kg phone drops from a careless individual on the roof of a sky scraper and it is moving at a speed of 10.5 m/s² when it hits the ground, assuming no air resistance, what is the bolt's momentum when it hits the ground?

• 10.5 kg*m/s

• -37.6 kg*m/s

• -6.83 kg*m/s

• -103 kg*m/s

Tags

NGSS.HS-PS2-2

If you are riding an electric bicycle at a constant velocity of 12.00 m/s down the road and accelerate at a rate of 0.75 m/s² for 3.50 s, what is the vehicle's new velocity after the period of acceleration?

• 10.25 m/s
• 15.5 m/s
• 14.6 m/s

• 8.75 m/s

Tags

NGSS.MS-PS2-2

A tesla model S is running a 100 m drag race and finishes in 6.5 s, what is the car's average velocity over the drag race?

• 25 m/s
• 10 m/s
• 60 m/s
• 15.38 m/s

Tags

NGSS.MS-PS3-1

How long will it take you to hike 2500 m if you walk an average of 1.5 m/s?

• 1667 s

• 3750 s

• 6000 s

• 5625 s

You take a walk downtown and walk 1000 m north and take a left to walk another 750 m west. What is your displacement over the entire walk recorded here?

• 1750 m south
• 500 m east
• 1000 m north
• 1250 m northwest

Using this position vs time graph, during what time has the object stopped?

• 10 s to 15 s

• 40 s to 65 s

• 0 s to 10 s

• 15 s to 40 s

According to this position vs time graph, when does the object have a displacement equal to zero

• between 10 s and 15 s

• at 0s and at 60 s

• at 0 s, 30 s, and 60 s

• at 40 s

using this velocity vs time graph, what is the object's averate velocity between 7 s to 12 s

• -2 m/s

• 2 m/s

• 5 m/s

• • -5 m/s

Using this velocity vs time graph, what is the acceleration from 2 s to 5 s?

• -1.67 m/s²

• 1.67 m/s²

• -1 m/s²

• 1 m/s²

Tags

NGSS.HS-PS2-1

Under which of these conditions could an object be accelerating even when its speed remains constant

• the object may be changing direction or moving in a circular path

• the object may be accelerating in the opposite direction of the motion

• if the object travels in a straight line

• if the object accelerates at a constant rate in a straight line