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Lesson Check Day 13(10pts.)

Authored by Spenser Chakerian

Science

9th - 12th Grade

HS-PS2-2 covered

Used 1+ times

Lesson Check Day 13(10pts.)
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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What term is used to describe an object's speed at one particular moment in time?

Average Speed

Instantaneous Speed

Acceleration

Velocity

Answer explanation

Instantaneous Speed is the term used to describe an object's speed at one particular moment in time.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image


Average speed is found by _____.

multiplying total distance traveled by the total time

multiplying the displacement by the total time spent

dividing the displacement by the total time spent

dividing total distance traveled by the total time

Answer explanation

Average speed is found by dividing total distance traveled by the total time.

Tags

HS-PS2-1

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Kaleb is driving his car to the grocery store. The direction and speed at which Kaleb's car is moving is described by its _____.

Acceleration

Velocity

Displacement

Average Speed

Answer explanation

Kaleb's car's direction and speed are described by its velocity, which includes both speed and direction.

Tags

HS-PS2-2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

If an object has constant velocity, then it _____.

is not moving

has negative acceleration

has no acceleration

has positive acceleration

Answer explanation

If an object has constant velocity, then it has no acceleration. Acceleration is the rate of change of velocity, so if velocity is constant, acceleration is zero.

Tags

HS-PS2-2

5.

MATH RESPONSE QUESTION

2 mins • 1 pt

Media Image

Two tennis balls are at the same height and released at the same time. One ball is dropped and hits the ground 5 seconds later. The other initially moves horizontally at 13 m/s.

In how many seconds will second ball hit the ground?

Mathematical Equivalence

ON

Tags

HS-PS2-2

6.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

Media Image

Velocity is speed with __________________________.

a unicycle helmet

direction

fight

Answer explanation

Velocity is speed with direction, as velocity includes both the speed of an object and the direction in which it is moving.

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A ping-pong ball rolls forward 6 meters, and bounces backward 3 meters. What was its displacement (distance from the origin)?

9 meters

6 meters

3 meters

0 meters

Answer explanation

The displacement of the ping-pong ball is the distance from the origin, which is 3 meters forward. Therefore, the correct answer is 3 meters.

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