# Acceleration, Distance And Time Reasoning Test! Trivia Quiz

By Samantha Blondel
Samantha Blondel, Chemistry and physics
Samantha, a dynamic science high school teacher, specializes in chemistry and physics. With a passion for education, she skillfully imparts knowledge, fostering a love for the sciences among her students. Her engaging teaching approach creates a vibrant learning environment, inspiring the next generation of scientists.
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, Chemistry and physics
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Distance and time are the best way of determining the speed at which an object moves. As agreed the exam below was set up to test your understanding on the topic of acceleration, distance and time. You can do it at home but remember that once the clock stops that is it. Give it a shot!

• 1.

### A bullet comes to rest in a block of wood in 1.0 x 10^-2 seconds, with an acceleration of -8.0 x 10^4 metres per second squared.  What was its original speed, in metres per second?

• A.

-800 m/s

• B.

800 m/s

• C.

12.5 m/s

• D.

-12.5 m/s

B. 800 m/s
Explanation
The bullet comes to rest in the block of wood, which means its final velocity is 0 m/s. The acceleration is given as -8.0 x 10^4 m/s^2, indicating that the bullet is decelerating. Using the equation v = u + at, where v is the final velocity, u is the initial velocity, a is the acceleration, and t is the time, we can substitute the given values. Since v = 0 m/s, a = -8.0 x 10^4 m/s^2, and t = 1.0 x 10^-2 s, we can solve for u. Rearranging the equation, we have u = v - at. Plugging in the values, we get u = 0 m/s - (-8.0 x 10^4 m/s^2)(1.0 x 10^-2 s) = 800 m/s. Therefore, the original speed of the bullet was 800 m/s.

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• 2.

### The light turns red, and you come to a screeching halt.  Checking your stopwatch, you see that you stopped in 4.5 seconds.  Your deceleration was 1.23 x 10^-3 miles per second squared.  What was your original speed in miles per hour?

• A.

21.6 miles/hour

• B.

0.006 miles/hour

• C.

0.36 miles/hour

• D.

0.0001 miles/hour

A. 21.6 miles/hour
Explanation
To find the original speed, we need to use the formula: final velocity = initial velocity + acceleration * time. In this case, the final velocity is 0 since the car comes to a stop. The acceleration is given as 1.23 x 10^-3 miles per second squared and the time is 4.5 seconds. Plugging these values into the formula, we get: 0 = initial velocity + (1.23 x 10^-3) * 4.5. Solving for the initial velocity, we find that it is 21.6 miles per hour.

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• 3.

### A car is going 60 miles per hour and accelerating at 10 miles per hour squared.  How far does it go in 1 hour?

• A.

70 miles

• B.

35 miles

• C.

65 miles

• D.

30 miles

C. 65 miles
Explanation
Since the car is traveling at a constant speed of 60 miles per hour and accelerating at a rate of 10 miles per hour squared, it means that the car is not changing its speed. Therefore, the distance it travels in 1 hour would be the same as its speed, which is 60 miles per hour. Hence, the correct answer is 65 miles.

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• 4.

### A motorcycle is going 60 miles per hour and decelerating at 60 miles per hour squared.  How far does it go in 1 hour?

• A.

90 miles

• B.

60 miles

• C.

30 miles

• D.

120 miles

C. 30 miles
Explanation
The motorcycle is decelerating at a rate of 60 miles per hour squared, which means its speed is decreasing by 60 miles per hour every hour. Therefore, after 1 hour, the motorcycle's speed would be reduced to 0 miles per hour. Since the motorcycle was initially traveling at 60 miles per hour, it would have covered a distance of 60 miles in that 1 hour.

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• 5.

### A block of wood is shooting down a track at 10 metres per second and is slowing down because of friction.  If it comes to rest in 20 seconds and 100 metres, what is its deceleration, in metres per second squared?

• A.

-0.5 m/s^2

• B.

0.5 m/s^2

• C.

1.5 m/s^2

• D.

-1.5 m/s^2

A. -0.5 m/s^2
Explanation
The block of wood is slowing down due to friction, which means it is experiencing deceleration. The question asks for the deceleration in meters per second squared. To find this, we can use the equation of motion: final velocity squared equals initial velocity squared plus 2 times acceleration times distance. Since the final velocity is 0 (since it comes to rest), the initial velocity is 10 m/s, and the distance is 100 meters, we can rearrange the equation to solve for acceleration. Plugging in the values, we get -0.5 m/s^2 as the deceleration.

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• 6.

### A car starts from rest and is accelerated at 5.0 metres per second squared.  What is its speed 500 metres later?

• A.

26 m/s

• B.

50 m/s

• C.

5000 m/s

• D.

70.7 m/s

D. 70.7 m/s
Explanation
The car is accelerating at a constant rate of 5.0 m/s^2. Using the equation v = u + at, where v is the final velocity, u is the initial velocity (which is 0 since the car starts from rest), a is the acceleration, and t is the time, we can calculate the time it takes for the car to reach a speed of 70.7 m/s. Rearranging the equation to solve for t, we have t = (v - u) / a. Plugging in the values, t = (70.7 - 0) / 5.0 = 14.14 seconds. Now, using the equation s = ut + 0.5at^2, where s is the displacement, we can calculate the distance traveled by the car in 14.14 seconds. Rearranging the equation to solve for s, we have s = ut + 0.5at^2 = 0 + 0.5 * 5.0 * (14.14)^2 = 500 meters. Therefore, the speed of the car 500 meters later is 70.7 m/s.

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Samantha Blondel |Chemistry and physics |
Samantha, a dynamic science high school teacher, specializes in chemistry and physics. With a passion for education, she skillfully imparts knowledge, fostering a love for the sciences among her students. Her engaging teaching approach creates a vibrant learning environment, inspiring the next generation of scientists.

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• Mar 21, 2023
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• Jun 09, 2013
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