Velocity - 1

Velocity - 1

Lesson Objective

At the end of the lesson, students will be able to

• Calculate average speed

• Calculate average velocity

Multiple Choice

What does the symbol ∆ stand for

• Change

• 3 points

Multiple Choice

Which of the following is the formula for displacement

• ∆x = X_f - X_i

• ∆x = X_i - X_f

Multiple Choice

Jerry walked from home to school, then from the school to the park. What is his total displacement?

• 2 km

• 5 km

• 8 km

• 10 km

Average Velocity

• An objects average velocity is defined as its displacement per unit of time

• The SI unit of Average velocity is m/s

• X_f - Final position; X_i - initial position

• t_f - Final time; t_i - initial time

Average Velocity

• If an object moves in the positive direction, the average velocity is positive

• If an object moves in the negative direction of a co-ordinate system, then its average velocity is negative.

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Head over to Teams for some guided examples

Multiple Choice

Find the velocity of a truck that travels 75 miles north in 2.5 hours.

• 187.5 mph north
• 30 mph north
• 300 mph north
• 200 mph north

Multiple Choice

If you ran 15 km/h for 0.33 h, how much distance would you cover?

• 45.45

• 4.95 km

• 14.67 km

• 0.022 km

Multiple Choice

If a man moves with a velocity of 15m/s, for 40 seconds and starts his journey at a position of 400 meters. What is his final position

• 1000 meters

• -1000 meters

• 600 meters

• -600 meters