Kinematics

SI unit of acceleration is-

• ms^-1

• ms^-2

• ms²

• none of these

Tags

NGSS.HS-PS2-1

What is the speed of an object that travels 60 meters in 4 seconds?

• 240 m/s

• 15 m/s

• 0.067 m/s

• 15 mph

What is velocity?

• the quickness of an object

• the location of an object

• acceleration

• speed in a specific direction

the unit of acceleration is

• (m/s²)

• jouls

• m

• s

A golf ball accelerates off a tee at 15m/s², changing its velocity from 0m/s to 50 m/s down the fairway. How long did it take the golf ball to accelerate?

• 750 seconds

• 35 seconds

• 0.3 seconds

• 3.3 seconds

Tags

NGSS.MS-PS2-2

A roller coasters accelerates from an initial velocity of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?

• 24 m/s²

• 18 m/s²

• 16 m/s²

• 16 m/s

A cannonball is fired with an initial velocity of 100. meters per second at an angle of 15.0° above the horizontal. What are the horizontal (v_x) and vertical (v_y) components of this velocity?

v_x = ​ (a)  

v_{y =} ​ (b)  

• 25.9 m/s

• 99.6 m/s

• 76.0 m/s

• 65.0 m/s

A drag racer accelerated from 0 m/s to 200 m/s in 5 s.  What was the acceleration?

• 0 m/s

• 40 m/s²

• -40 m/s²

• 40 m/s

Tags

NGSS.MS-PS2-2

A negative acceleration means that your object is  

• constant

• speeding up

• at rest

• slowing down

Acceleration: is the rate of change in

• velocity

• speed

• displacement

• direction