Define acceleration. Objectives Know what acceleration is and how to calculate it. Outcomes (5) Define acceleration and state how it can be calculated.

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Define acceleration

Objectives Know what acceleration is and how to calculate it. Outcomes (5) Define acceleration and state how it can be calculated. (6) Calculate acceleration from practical observations. (7) Analyse the factors which will affect acceleration. Key terms: acceleration, speed, time, force.

Acceleration is a measure of change in speed. It can be calculate by dividing the change in speed by time. Outcomes (5) Define acceleration and state how it can be calculated. (6) Calculate acceleration from practical observations. (7) Analyse the factors which will affect acceleration. Key terms: acceleration, speed, time, force.

Tasks Carry out the practical to measure the acceleration of the trolley at different heights. Final speed = average speed x 2 Design a table to record results. Show at least 2 example calculations. Outcomes (5) Define acceleration and state how it can be calculated. (6) Calculate acceleration from practical observations. (7) Analyse the factors which will affect acceleration. Key terms: acceleration, speed, time, force.

Acceleration ( m/s 2 ) Starting speed (m/s)Final speed (m/s)Time taken (s) Acceleration Calculations 1) Change in speed = 14 m/s; time taken = 2 seconds. Calculate the acceleration. 2) A car accelerates from rest (zero speed) up to a speed of 30 m/s in 12 seconds. Calculate the acceleration. 3) A cyclist in the Tour de France accelerates down a hill from 22 m/s to a speed of 37 m/s. This acceleration takes him 2 seconds. Calculate the acceleration. 4) A rocket launching in the Ukraine accelerates upwards from rest to a speed of 12 km/s in 8 seconds. Calculate the acceleration. 5) A cyclist accelerates from 0 m/s to 8 m/s in 3 seconds. What is his acceleration ? Is this acceleration higher than that of a car which accelerates from 0 to 30 m/s in 8 seconds? 6) A car advertisement states that a certain car can accelerate from rest to 70 km/h in 7 seconds. Find the car’s average acceleration. 7) A lizard accelerates from 2 m/s to 10 m/s in 4 seconds. What is the lizard’s average acceleration? 8) If a Ferrari, with an initial velocity of 10 m/s, accelerates at a rate of 50 m/s 2 for 3 seconds, what will its final velocity be? 9) Complete the following table: