P2.1 Flashcards

Pregunta	Respuesta
What is the SI unit of distance?	Metres, m
What is the speed of a runner who covers 400m in 50s?	/8m/s
What is the difference between using speed and velocity?	Velocity is speed in a particular direction
What is the SI unit of acceleration?	metres per second squared, m/s2
What does a horizontal line on a velocity-time graph represent?	Constant velocity, zero acceleration
What would the velocity-time graph for a steadily decelerating object look like?	A straight line with a negative gradient
What does an upwardly curving line represent on a distance time graph?	Increasing velocity
What does an upwardly curving line represent on a velocity time graph?	Increasing acceleration
What is the average speed, in m/s, of a car that completes a distance of 1.2km in 1 minute?	20m/s
What does the distance time graph for a stationary object look like?	Straight horizontal line
What quantity has the unit m/s2?	Acceleration
What does a negative value for acceleration mean?	A deceleration
What happens to the gradient of the line on a distance time graph if the speed increases?	The gradient increases
How can an object travelling at a steady speed be accelerating?	By changing it's direction
A car accelerates from rest to a speed of 40m/s in 10s. What is it's acceleration?	4m/s2
What part of a velocity time graph represents distance travelled?	Area between the line and the x-axis

Resumen del Recurso

	Creado por Mel Hughes hace más de 8 años