Motion and speed

How can you calculate speed?

• Speed = Distance + Time.

• Speed = Distance - Time.

• Speed = Distance / Time.

• Speed = Time / Distance.

What is a frame of reference?

• A method of measuring time intervals.

• The viewpoint, perspective, or set of conditions from which an observer measures the position, motion, or behavior of objects.

• A type of physical frame used in construction.

• A reference point for determining temperature.

What is constant speed?

• Constant speed means an object covers equal distances in equal intervals of time.

• Constant speed means an object accelerates continuously over time.

• Constant speed means an object moves in a circular path.

• Constant speed means an object changes direction frequently.

What is speed?

• Speed is the rate at which an object moves or covers distance over time.

• Speed is the measure of how heavy an object is.

• Speed is the amount of force applied to an object.

• Speed is the total distance traveled regardless of time.

What does it mean if an object is at rest?

• An object is moving at a constant speed.

• An object is not changing its position relative to a reference point.

• An object is accelerating in a straight line.

• An object is in motion relative to a reference point.

What is a reference point in motion?

• A moving object used to determine speed.

• A stationary object used to determine if another object is in motion.

• An object that changes position frequently.

• A point in time that marks the beginning of motion.

What is the effect of friction on motion?

• Friction accelerates motion, causing objects to speed up.

• Friction has no effect on motion.

• Friction opposes motion, causing objects to slow down.

• Friction only affects objects at rest.

Which of the following is a unit of speed?

• m/s (meters per second)

• kg/m (kilograms per meter)

• J/s (joules per second)

• N (newton)

What is the speed of a lion that walked for 4 days and went 26 miles?

• 4 miles/day

• 5 miles/day

• 6.5 miles/day

• 7 miles/day

What is the speed of a car that has travelled 72 miles in 3 hours?

• 20 miles/hour

• 22 miles/hour

• 24 miles/hour

• 26 miles/hour