SCIENCE

Which refers to a continuous change in the position of a body relative to a reference point, as measured by a particular observer in a particular frame of reference?

• energy

• force

• length

• motion

Which refers to the total length of the entire path traveled by an object?

• displacement

• distance

• motion

• reference point

which of the following is NOT True about distance and displacement?

• displacement can be equal to zero

• distance can be equal to displacement

• distance can be greater than displacement

• displacement can be greater than distance

what is shown when you look at the speedometer in a moving car?

• average speed

• average acceleration

• instantaneous speed

• instantaneous acceleration

a van moving along a straight highway to the south direction traveled 180 km in 3 hr. What is the velocity of the van?

• 30 km/hr

• 60 km/hr

• 30 km/hr, north

• 60 km/hr, south

What is the rate of change in velocity?

• acceleration

• distance

• displacement

• time

The following conditions show that an object accelerates, EXCEPT;

• when the object's velocity changed

• when an object at constant speed changed its direction

• when an object at constant speed suddenly slows down

• when an object is constantly moving at the same speed in a straight line

why does a car accelerate when it is traveling around in a circular path at a constant speed?

• the car speeds up

• the car doesn't accelerate

• the car slows down

• the car changes its direction

which of the following is TRUE about a grocery cart that travels 5 meters to the left, then another 5 meters to the right?

• the displacement of the grocery cart is equal to 10 meters

• the displacement of the grocery cart is equal to 10 meters, right

• the total distance traveled by the grocery cart is equal to 10 meters

• the total distance traveled by the grocery cart is equal to 10 meters, right

A car accelerates from a stop to 40 m/s west in 5 s. what is the car's acceleration

• 8 m/s², west

• 8 m/s²

• -8 m/s², west

• -8 m/s²