Question

A car is moving at a speed of 60 m/s, when the driver applies the brakes, which causes a deceleration of 2 m/s². How many seconds will it take for the car to stop and how far will it travel till it stops?

30 sec, 450 meters

25 sec, 800 meters

30 sec, 1800 meters

20 sec, 900 meters

30 sec, 900 meters

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Question 192 pts

You throw a ball downward from a height of 5 meters and it takes it 0.5 seconds to reach the ground . What is the initial and final velocity of the ball?

initial velocity = -6.88 m/s, final velocity = -12.45 m/s

initial velocity = -8.12 m/s, final velocity = 13.38 m/s

initial velocity = -7.55 m/s, final velocity = -15.66 m/s

initial velocity = -7.55 m/s, final velocity = -12.45 m/s

initial velocity = -6.56 m/s, final velocity = -10.94 m/s

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Question 202 pts

Calculate the mass of a person weighing 190 lbs and then calculate how much force must be exerted to make them accelerate at a rate of 20 ft/s².

115.55 lbs

118.75 lbs

122.75 lbs

3,800 lbs

5.9375 lbs

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Question 212 pts

A force of 550 Newtons to the right and another force of 425 Newtons upward are applied on a 40 kg object perpendicular to each other. What is the magnitude of the net force on this object and its acceleration?

682.07 N, 17.38 m/s^2

695.07 N, 16.24 m/s^2

635.20 N, 15.88 m/s^2

695.07 N, 17.38 m/s^2

712.80 N, 17.82 m/s^2

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Question 222 pts

An arrow is fired at a speed of 80 ft/s at a target that is 125 feet away. By how many feet will it miss that target?

42.15 feet

37.38 feet

24.55 feet

39.06 feet

48.67 feet

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Question 232 pts

If you weight 200 lbs on earth, what will your weight be on a planet, which is 5 times as massive as the earth and 3 times the size of the earth?

116.88 lbs

113.24 lbs

109.55 lbs

111.11 lbs

256.22 lbs

Answer 1

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