Physics Multiple Choice Part 1

A car that is moving at a constant velocity of 20 m/s, east for 5 seconds has an acceleration of ____ m/s/s.

0

A teacher does the following: i. walks 2 m, south ii. walks 4 m, east iii. walks 2 m, north iv. walks 4 m, west. The overall displacement of the teacher is ____.

0 m

A teacher does the following motion in 10 seconds: i. walks 2 m, south ii. walks 4 m, east iii. walks 2 m, north iv. walks 4 m, west. The average velocity of the teacher is ____.

0.0 m/s

Identify the following quantity as being either a scalar or a vector: 20 m, south

Vector

Identify the following quantity as being either a scalar or a vector: 50 mi/hr, east

Vector

In terms of their definitions, an essential difference between displacement and distance is that ____.

distance is a scalar and displacement is a vector.

A car with a rightward velocity and a leftward acceleration is ____.

moving to the right and slowing down

A car's velocity after each consecutive second of motion is 2 m/s, 4 m/s, 6 m/s, 8 m/s. This is evidence that the car is ____.

moving with a constant acceleration

A teacher does the following motion in 10 seconds: i. walks 4 m, south ii. walks 8 m, east iii. walks 4 m, north iv. walks 8 m, west. The average speed of the teacher is ____.

2.4 m/s

A teacher does the following: i. walks 4 m, south ii. walks 8 m, east iii. walks 4 m, north iv. walks 8 m, west. The overall distance traveled by the teacher is ____.

24 m

Which one of the following trucks has a northward displacement?

A truck travels south for 8 miles, turns around and travels north for 18 miles.

For which one of the following motions is the object's displacement different than the distance traveled?

After a home run, a baseball player runs all the way around the bases.

A vector is a quantity that is fully described by ____.

Both a magnitude and its direction

If an object has an acceleration then it MUST be ____.

Changing its velocity

A baseball is falling downwards from the peak of its trajectory and speeding up at a constant rate. The direction of the baseball's acceleration is ____.

Downward

A car is moving westward along Lake Avenue and decreasing its speed from 35 mph to 25 mph. The direction of this car's acceleration is ____.

Eastward

Accelerating objects MUST be changing their speed.

False

An object that is accelerating is ALWAYS moving fast.

False

Grandma Henderson challenges Michael Johnson in the 400-meter dash. Grandma H spins her wheelchair wheels five times and gives up 15 meters from the starting line. MJ makes a complete circle around the track and stops at the starting line. In this race,

Grandma Henderson has the greatest average velocity.

Grandma H challenges Michael Johnson in the 400-meter dash. Grandma H spins her wheelchair wheels five times and gives up 15 meters from the starting line. MJ makes a complete circle around the track and stops at the starting line. In this race, ____.

Grandma Henderson has the greatest displacement

Which of the following is NOT an acceleration unit? List all that apply in alphabetical order with neither spaces nor commas between letters.

Km/s

Grandma Henderson challenges Michael Johnson in the 400-meter dash. Grandma H spins her wheelchair wheels five times and gives up 15 meters from the starting line. MJ makes a complete circle around the track and stops at the starting line. In this race, ____.

Michael Johnson has the greatest average speed

Grandma H challenges Michael Johnson in the 400-meter dash. Grandma H spins her wheelchair wheels five times and gives up 15 meters from the starting line. MJ makes a complete circle around the track and stops at the starting line. In this race, ____.

Michael Johnson has the greatest distance

Suppose that you run along three different paths from location A to location B. Along which path would your distance traveled be the same as your displacement?

Path 2

Suppose you are considering three different paths (A, B and C) between the same two locations. Along which path would you have to move with the greatest speed to arrive at the destination in the same amount of time?

Path C

Identify the following quantity as being either a scalar or a vector: 20 m

Scalar

Identify the following quantity as being either a scalar or a vector: 55 mi/hr

Scalar

On a position-time graph, the magnitude of the slope is representative of an object's _____.

Speed

Acceleration is a vector quantity.

True

An object that is moving rightward and speeding up has a rightward acceleration.

True

An object which is moving at constant speed in a circle has an acceleration.

True

An object which is slowing down has an acceleration.

True

The direction of the acceleration vector is dependent upon two factors: the direction the object is moving and whether the object is speeding up or slowing down.

True

Which one of the following statements is true?

Velocity is speed with a direction.

For any given motion, displacement is ____.

how far out of place which the object finishes relative to the starting location.

For any given motion, speed refers to ____.

how fast an object is traveling

In terms of their definitions, an essential difference between velocity and speed is that ____.

speed is a scalar and velocity is a vector

For any given motion, the distance is ____.

the amount of ground which is covered by the moving object.

For any given motion, the velocity is ____.

the rate at which an object's position changes

Acceleration is defined as ____.

the rate at which the velocity changes