Kinematic

What is Kinematics?

• The study of motion without reference to forces and masses.

• The measure that separates two points.

• A course taken by an object.

• Ratio between time and speed.

An object can be moving for 10 seconds and still have zero displacement.

• True

• False

The fastest trains are magnetically levitated above the rails to avoid friction (and are therefore called

MagLev trains...cool, huh?). The fastest trains travel about 250 km in a half an hour. What is their

average speed in km/hour?

• 250 km/hr

• 125 km/hr

• 500 km/hr

• 750 km/hr

A car is NOT accelerating if it is moving

• at constant velocity

• only as influenced by gravity

• in a circle

• at increasing speed

A tiger travels 96 m in 8 s. What is his velocity over the interval?

• 0.04 m/s

• 225 m/s

• 25 m/s

• 12 m/s

What is the formula to calculate speed?

• S = d/t

• S = t/d

• S = t x d

• S = d x t

You run from your house to the Midway Mall that is 4 km away. You then walk home. The distance you traveled is 8 km. What is your displacement?

• 2 km

• 0.5 km

• 0 km

• 8 km

A change in position over time is known as:

• acceleration

• constant speed

• displacement

• average speed

Velocity is both ____ and _____.

• speed , direction

• direction, mass

• direction, magnitude

• volume, density

The car covers a distance of 30 km due east in 3 hours and truck covers 40 km in 2 hours due west. What is the speed of the car and the velocity of the truck, respectively?

• 10 km/hr, 20 km/hr

• 15 km/hr, 20 km/hr

• 10 km/hr, 13 km/hr

• 0.10 km/hr, 0.05 km/hr