ACTIVITY 2: ONE-DIMENSIONAL MOTION PROBLEMS Directions: Solve the following problems. Show your solution. Express your final ans two decimal places. 1. A car starts from rest and accelerates uniformly over a time of 5.21 seconds fo distance of 110 meters. Determine the acceleration of the car. 2. A car has uniformly accelerated from rest to a speed of 25 m/s after traveling 7 What is its acceleration? 3. Albert is riding his scooter at a velocity of 80 km/hr, when he sees a dog cross road 45 m away. He immediately steps hard on the brakes to get the maximun deceleration of 7.5 m/s². How far will he go before stopping? Will he hit the dog 4. A construction worker accidentally drops a brick from a high scaffold. (a) What is the velocity of the brick after 4.0 s? (b) How far does the brick fall durin time? 5. You decide to flip a coin to determine whether to do your physics or biology homework first. The coin is flipped straight up. (a) What is the velocity of the co the top of its trajectory? (b) If the coin reaches a highest point of 0.25 m above where you released it, v as its initial speed? (c) If you catch it at the same height as you released it, hov much time did it spend in the air?

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Chapter1: Units, Trigonometry. And Vectors
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ACTIVITY 2: ONE-DIMENSIONAL MOTION PROBLEMS
Directions: Solve the following problems. Show your solution. Express your final answers in
two decimal places.
1. A car starts from rest and accelerates uniformly over a time of 5.21 seconds for a
distance of 110 meters. Determine the acceleration of the car.
2. A car has uniformly accelerated from rest to a speed of 25 m/s after traveling 75 m.
What is its acceleration?
3. Albert is riding his scooter at a velocity of 80 km/hr, when he sees a dog crossing the
road 45 m away. He immediately steps hard on the brakes to get the maximum
deceleration of 7.5 m/s². How far will he go before stopping? Will he hit the dog?
4. A construction worker accidentally drops a brick from a high scaffold. (a)
What is the velocity of the brick after 4.0 s? (b) How far does the brick fall during this
time?
5. You decide to flip a coin to determine whether to do your physics or biology
homework first. The coin is flipped straight up. (a) What is the velocity of the coin at
the top of its trajectory?
(b) If the coin reaches a highest point of 0.25 m above where you released it, what w
as its initial speed? (c) If you catch it at the same height as you released it, how
much time did it spend in the air?
Transcribed Image Text:ACTIVITY 2: ONE-DIMENSIONAL MOTION PROBLEMS Directions: Solve the following problems. Show your solution. Express your final answers in two decimal places. 1. A car starts from rest and accelerates uniformly over a time of 5.21 seconds for a distance of 110 meters. Determine the acceleration of the car. 2. A car has uniformly accelerated from rest to a speed of 25 m/s after traveling 75 m. What is its acceleration? 3. Albert is riding his scooter at a velocity of 80 km/hr, when he sees a dog crossing the road 45 m away. He immediately steps hard on the brakes to get the maximum deceleration of 7.5 m/s². How far will he go before stopping? Will he hit the dog? 4. A construction worker accidentally drops a brick from a high scaffold. (a) What is the velocity of the brick after 4.0 s? (b) How far does the brick fall during this time? 5. You decide to flip a coin to determine whether to do your physics or biology homework first. The coin is flipped straight up. (a) What is the velocity of the coin at the top of its trajectory? (b) If the coin reaches a highest point of 0.25 m above where you released it, what w as its initial speed? (c) If you catch it at the same height as you released it, how much time did it spend in the air?
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