Kinematics Equation Identification

Identify which of the following equations should be used to answer the following.

You may have to select multiple if the situation changes.

A tiger can accelerate from rest to a speed of 28 m/s in 5.9. s. What distance does it travel in this time?

Answer explanation

Missing Acceleration

Identify which of the following equations should be used to answer the following.

You may have to select multiple if the situation changes.

When a skydiver hits terminal velocity, the force of gravity is equal to the force of air resistance and the net force is zero. What is their terminal velocity if they fall 50 m in 3.4s?

Answer explanation

Constant Velocity

Identify which of the following equations should be used to answer the following.

You may have to select multiple if the situation changes.

If a Ferrari, with an initial velocity of 10 m/s, accelerates at a rate of 50 m/s/s for 3 seconds, what will its final velocity be?

Answer explanation

Constant Acceleration with Missing Displacment

Identify which of the following equations should be used to answer the following.

You may have to select multiple if the situation changes.

Josh rolled a bowling ball down a lane in 2.5 s. The ball traveled at a constant acceleration of 1.8 m/s/s down the lane and was traveling at a speed of 7.6 m/s by the time it reached the pins at the end of the lane. How fast was the ball going when it left Tim’s hand?

Answer explanation

Constant Acceleration with Missing Displacment

Identify which of the following equations should be used to answer the following.

You may have to select multiple if the situation changes.

A park ranger driving on a back country road suddenly sees a deer "frozen" in the headlights.  The ranger, who is driving at 11.4 m/s, immediately applies the brakes and slows with an acceleration of 3.80 m/s/s.  If the deer is 20.0 m  from the ranger's vehicle when the brakes are applied,  will he hit the deer?

Answer explanation

Constant Acceleration with Missing Time

Identify which of the following equations should be used to answer the following.

You may have to select multiple if the situation changes.

A cop car is sitting in a speed trap when a sports car goes by way too fast. The cop accelerates to 40 m/s over 5 s. How far does it travel in this time?

Answer explanation

Constant Acceleration with Missing Acceleration

Identify which of the following equations should be used to answer the following.

You may have to select multiple if the situation changes.

A student is standing on the top of a hill and starts to ski down, accelerating at a constant 2 m/s/s. If it takes her 15 s to reach the bottom, what is the length of the slope?

Answer explanation

Constant Acceleration with Missing Current Velocity

Identify which of the following equations should be used to answer the following.

You may have to select multiple if the situation changes.

A dog runs down his driveway with an initial speed of 5 m/s for 8 s, then uniformly increases his speed to 10 m/s in 5 s. How far does he run?

Answer explanation

Constant Velocity then Constant Acceleration with Missing Acceleration

Identify which of the following equations should be used to answer the following.

You may have to select multiple if the situation changes.

A mountain goat starts a rock slide and the rocks crash down the slope 100 m. If the rocks reach the bottom in 5 s, what is their acceleration?

Answer explanation

Constant Acceleration with Missing Current Veloicity

Identify which of the following equations should be used to answer the following.

You may have to select multiple if the situation changes.

A bobsled team accelerates the sled to a top speed of 150 m/s in 3 s from rest. What is the acceleration of the sled?

Answer explanation

Constant Acceleration with Missing Displacement