Newton’s second law of motion. Small mass - B IG ACCELERATION.

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Presentation transcript:

Newton’s second law of motion

Small mass - B IG ACCELERATION

BIG MASS - Small acceleration

A 52-kg water skier is being pulled by a speedboat. The force causes her to accelerate at 2 m/s 2. Calculate the net force that causes this acceleration. F = MA

A 52-kg water skier is being pulled by a speedboat. The force causes her to accelerate at 2 m/s 2. Calculate the net force that causes this acceleration. F = MA F = 52 kg X 2 m/s 2

A 52-kg water skier is being pulled by a speedboat. The force causes her to accelerate at 2 m/s 2. Calculate the net force that causes this acceleration. F = MA F = 52 kg X 2 m/s 2 F = 104 kg · m/s 2

A 52-kg water skier is being pulled by a speedboat. The force causes her to accelerate at 2 m/s 2. Calculate the net force that causes this acceleration. F = MA F = 52 kg X 2 m/s 2 F = 104 kg · m/s 2 or F = 104 N

What is the net force on a 1,000 kg elevator accelerating at 2 m/s 2. F = MA

What is the net force on a 1,000 kg elevator accelerating at 2 m/s 2. F = MA F = 1000 kg X 2 m/s 2

What is the net force on a 1,000 kg elevator accelerating at 2 m/s 2. F = MA F = 1000 kg X 2 m/s 2 F = 2000 kg · m/s 2

What is the net force on a 1,000 kg elevator accelerating at 2 m/s 2. F = MA F = 1000 kg X 2 m/s 2 F = 2000 kg · m/s 2 or F = 2000 N

What is the net force needed to accelerate a 55-kg cart at 15 m/s 2. F = MA

What is the net force needed to accelerate a 55-kg cart at 15 m/s 2. F = MA F = 55 kg X 15 m/s 2

What is the net force needed to accelerate a 55-kg cart at 15 m/s 2. F = MA F = 55 kg X 15 m/s 2 F = 825 kg · m/s 2

What is the net force needed to accelerate a 55-kg cart at 15 m/s 2. F = MA F = 55 kg X 15 m/s 2 F = 825 kg · m/s 2 or F = 825 N