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- A 3kg ball is thrown straight into the air at 8m/s. How high does it travel? Use g=9.8m/s2Fast Car: On a hot day in the flats, the temperature is 103.6 degrees. A driver finds an empty, flat stretch of desert that is 1776 meters long and decides to push the limits of his car. He finds the car can accelerate from 0 to 60 mph (26.8 m/s) in 4.30 s. Now he wants to see how fast the car can go. Assume the car maintains the same average acceleration until it reaches its top speed of 84.8 m/s. (a) How long will it take the car to reach its top speed? (b) How far will the car travel before it reaches its top speed?A ball is thrown vertically upward with an initial speed v and reaches a maximum height y1. The same ball is thrown with an initial speed 3v to reach the maximum height y2. What is the correct relationship between y2 and y1? А. y2 = ½ y1 В. y2 = 2 y1 %D С. y2 = 4 y1 y2 = 9 y1 D.
- An airplane flies at a constant altitude of 1200 m and a constant speed of 80 m/s when a 7.0 kg bowling ball falls out of the cargo hold. What is the speed of the bowling ball as it hits the ground? Ignore air resistance. O 173 m/s O 187 m/s O 153 m/s O 208 m/s O 140 m/s 吕0 F7 F8 F6 F4 F5 F3 F1 F2 & @ # $ % 4 5 7 %24A ball of 5kg is shot vertically upward with 19.6m/s. What is the maximum height it can reach (in meter)?5. A student throws a 0.1 kg ball into the air. (A) Just after the ball leaves their hand, it has a velocity of 5 m/s. (B) At the peak of its motion, it has a velocity of 2 m/s. Assuming no air resistance, to what height dịd the student throw the ball? Also, assume the ball started at h=0 (The zero-reference line is at the starting position of the ball). The energy chart is optional. KE- Vz- Poson A SystemFlow Poston KE- 1.2SJ@ A KE /2..1.2 KE- 0.25 @B Etr E, E Ea Et E, E En Energy Equation KETGPE = KE + GPE 6. A parachutist of mass 50.0 kg jumps out of a stationary balloon at a height of 1,000 meters. The system consists of the parachutist and the Earth, if the parachutist lands with a speed of 5.0 m/s, how much energy was transferred out of the system (so energy transferred to something else)? 7. Suppose the spring below has a spring constant of 50. N/m. The box has a mass of 8.0 kg and rests on a surface of negligible friction. In the diagram above, the spring was compressed 4.0 m.…
- A 2 kg ball Is thrown straight into the air at 9 m/s. How high does it travel? Use g=9.8 m/s2Fast Car: On a hot day in the flats, the temperature is 106.2 degrees. A driver finds an empty, flat stretch of desert that is 1913 meters long and decides to push the limits of his car. He finds the car can accelerate from 0 to 60 mph (26.8 m / s) in 4.95 s. Now he wants to see how fast the car can go. Assume the car maintains the same average acceleration until it reaches its top speed of 87.9 m / s. (a) How long will it take the car to reach its top speed? (b) How far will the car travel before it reaches its top speed?