5. Below is the a-t-graph of a motorbike starting from rest during the first 0...10 seconds. What is the maximum speed of the bike during this timeframe? V. a) 42 m/s b) 22 m/s c) 62 m/s d) can't define using this graph 14 a [m/s²] -5 6 T.V 10 t [s]

A 2 kg watermelon is dropped from rest from a 6 m tall roof. a) Draw a sketch of the scenario.  b) How fast will the watermelon be moving as it strikes the ground below? c)  Determine how long it took the watermelon to strike the ground.  Round your answer to the nearest tenth. d) What was the watermelon's PE(J), before being dropped? e) What was the watermelon's KE(J) when it struck the ground and f) What was the Total Energy-TE(J)?

A. Determine the max height reached by Sabiha. B. Determine the maximum height reached by Ryan. C. Determine algebraically whether or not Sabiha and Ryan will meet to high-five. If so, determine how many seconds have passed since Ryan was initially launched when they do high-five.

6. A train is moving with a constant speed. The train moves 60 meters for every 1.5 seconds that elapses. a. Assume that we get 40 by dividing 60 by 1.5. What is the name that is commonly given to a quantity represented by this number 40? b. To denote the quantity completely, what additional information must be given besides the number 40? c. How would you interpret the number 40 in this instance? Your answer should mention distance and time. d. Use your interpretation (not algebra) to find the distance the train moves in 2.5 seconds.

Mass m of the object: A. It is the property of the object defined as its resistance to be moved and is conserved B. Is a scalar quantity with the unit (SI System): [kg] C. Changes, depends on the object’s location D. Only A. and B. are correct

2. A jet plane has a takeoff speed of vtakeoff = 73 m/s and can move along the runway at an average acceleration of 2.4 m/s2. The runway is 1.2 km. Write out the 3 Kinetic equations. a. b. Write out the values of initial position, initial velocity, and acceleration. How many seconds will it take for the plane to reach takeoff speed? с. d. How far will the plane have to travel to get to takeoff speed? will the plane be able to get to take off before it gets to the end of the runway? е.

3. Mr. Purley crashed his car with the greatest g force ever survived by a human being. He decelerated from 53.6m/s to zero in a distance of only about .59m calculate Mr. Purley's acceleration. I A. 2687m C. 2435m B. 2874m D. 3234m 4. An astronaut drops a rock on an asteroid. The rock is released from a height of 1.45m above the ground 1.89 seconds later. What is the acceleration due to gravity on this asteroid. A. -.17 m/s2 C. -.70 m/s? B. -.35 m/s² D. .406 m/s2 MacBook Air 41 F7 F3 F4 8. 3. 4. E Y H. 6 LL

1. A car is travelling towards the start line and the timer starts timing when the car crosses the start line. When the car crosses the start line, it is travelling at 5 m.s1. The car maintains its speed for 3 seconds then speeds up to 8 m.s1 in 4 seconds. It maintains this speed for 1 second then brakes hard and comes to a rest in 3 seconds. 10 9. 8. 7 3 2 1 0. 0 1 2 3 4 7 8 9 10 11 Time (s) a) What is the instantaneous velocity of the car at t = 7 s? b) What is the displacement? c) What is the average velocity of the car for the journey? 5 4- Velocity (m/s)

A car travels 250 m/s for 3 seconds. How far did the car travels in 3 seconds? Choose the correct answer withe correct unit.   A. 750 miles   B. 750 feet.   C. 750 mph   D. 750 m

3. A speeding car going 30 m/s passes a police car that is at rest. At the moment the speeder passes, the police car pulls out and accelerates 4 m/s/s. The speeder continues going 30 m/s. Which is ahead and by how much after 10 seconds? When does the police car catch the speeder?