Acceleration

What is Acceleration Acceleration Review of Velocity Remember! The instant velocity of an object is the speed of the object with a direction. Name the three controls on a car that cause it to accelerate. Acceleration is a change in velocity - either in the speed or in the direction. The brake pedal and gas pedal cause speed changes. The steering wheel causes direction changes. An object is accelerating if it is moving ...(select all that are true) with changing speed in a circle extremely fast downward If an object is NOT accelerating, then it must be true that ...(select all that must be true) parked rest slowing down moving with a constant speed maintaining a constant velocity Acceleration as a Rate Quantity Acceleration is the rate at which an object's velocity changes. The velocity of an object refers to how fast it moves and in what direction. The acceleration of an object refers to how fast an object changes its speed or its direction. Objects with a high acceleration are rapidly changing their speed or their direction.As a rate quantity, acceleration is expressed by the equation: acceleration = = An object with an acceleration of 10 m will ... move 10 meters in 1 second change its velocity by 10 m in 1 second have a velocity of 100 m after 10 s Juan pushes on the car's gas pedal and increases his speed as follows:0 mi at 0 seconds10 mi at 1 second20 mi at 2 seconds30 mi at 3 seconds40 mi at 4 secondsWhat is the acceleration of Juan's car? 1 mi 10 mi 20 mi Mr. Henderson's car accelerates from 0 to 60 mi in 4 seconds. What is it's rate of acceleration? 15 m 60 mi 15 mi A car speeds up from rest to +16 m in 4 seconds. What is the acceleration? 4 m 4 m 4 mi A car slows down from +32 m to +8 m in 4 seconds. What is the acceleration? -6 m -6 m 6 m Let's Review Examples of Acceleration Sort each item below as a an example of acceleration or no acceleration. Acceleration changing speed changing direction speeding up slowing down driving in a circle at a constant speed NO Acceleration at rest (no motion) traveling in a straight line at 20 miles constant speed and direction