Relay Race - Kinematics (B day)

What is kinematics?

• The mathematical description of motion.

• The study of the benefits of physical activity.

• The study of forces acting inside the beams of a structure.

• A process that makes understanding the real world more difficult.

This term is the rate of change of position over a set period of time. (Use all lowercase letters).

Which equation represents uniform motion?

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Which equation describes the relationship between velocity, position, and acceleration but does not depend on time?

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A Saturn V rocket is launched straight up with a constant acceleration of 13 m/s². After 3 minuets, how fast is the rocket moving? (Round your answer to the nearest whole number).

• 2340 m/s

• 39 m/s

• 1900 m/s²

• 13 m/s²

In this type of motion, gravity is the only force acting on the object.

A fully loaded Boeing 747 (airplane) with all engines at full thrust accelerates at 2.8 m/s^2. It’s minimum takeoff speed is 75 m/s. How much time will the plane take to reach its takeoff speed?
(Round your answer to the nearest whole number).

• 77.8 seconds

• 27 seconds

• 105 seconds

• 1 minute 12 seconds

A car is traveling at a speed of 25 m/s on wet pavement. The driver sees and obstacle ahead and decides to stop. From this instant, it takes her 1.05 s to begin applying the brake. Once the brakes are applied, the car experiences an acceleration of -3.5 m/s^2. How far does the car travel from the instant the driver notices the obstacle until stopping?

(Round your answer to the nearest whole number)

• ???

• -63 m

• 89 m

• 115 m

A heavy rock is dropped from rest at the top of a cliff and falls 115 m before hitting the ground. What is the MAGNITUDE of its velocity when it hits the ground? Hint: a_y = -g = -9.8 m/s²
(Round your answer to the nearest whole number)

• 47 m/s

• 2254 m/s

• -9.8 m/s

• 2254 m/s²

In this type of motion, velocity is constant and acceleration is equal to zero.