G3_IS_Đề cương ôn tập giữa HK1 25-26

Which object can be used to measure distance?

• stopwatch

• ruler

• scale

Which object can be used to measure time?

• stopwatch

• ruler

• scale

What is the unit of distance?

• Metre

• second

• hour

What is the unit of speed?

• m/s (meters per second)

• km/m (kilometers per meter)

• s/m (seconds per meter)

A bus traveled 25 kilometers in one hour. Which is the speed of the bus?

• 70 kilometers per hour

• 35 kilometers per hour

• 25 kilometers per hour

A car traveled 100 kilometers in two hours. Which is the speed of the car?

• 50 kilometers per hour

• 65 kilometers per hour

• 55 kilometers per hour

An object is in motion if its location...

• stays still

• changes

• does not change

Forces can make an object _____.

• slow down

• speed up

• Both A and B

The forces that cause an object to move are called __________ forces.

• balanced

• unbalanced

• friction

Forces that keep an object to stay at rest are called __________ forces.

• balanced

• unbalanced

• friction