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Object A has a mass of 4.8 kg and is moving at 4.5 m/s when it collides head-on with a stationary object B of mass of 6.0 kg. Object A rebounds directly backward with a velocity of 0.30 m/s while object B moves forward with a velocity of 4.0 m/s. Determine whether the collision is elastic.
Note: For this question, please include all of your work on your written solution. There is no need to place your answer in the answer box for this problem.
Your Answer:
A graduate student runs a model space shuttle launch test to test a potential new rocket booster design. The 13 kg rocket booster is used to help launch the 182 kg space shuttle. At the moment before the booster detaches from the shuttle, the velocity of the shuttle and booster is 69 m/s [E 65° up]. When the booster detaches from the shuttle, the space shuttle has a velocity of 60 m/s [E 75° up]. Determine the velocity and direction of the booster right after it detaches from the shuttle.
Note: For this question, please include both the velocity and direction on your written solution. There is no need to place your answer in the answer box for this problem.
During a military muster, a bombardier uses a 1480 kg cannon on wheels to fire a 60 kg cannonball horizontally. The bombardier notices that the cannon rolls back at a velocity of 1.8 m/s. With what velocity was the cannonball fired from the cannon?
Your Answer:
A toy car with a mass of 85 g traveling 10.6 m/s hits a wall and bounces back at 2.2 m/s in the opposite direction at the moment instantly after the collision. If the impact force the wall exerts on the toy car is 6.1 N, for how long was the toy car in contact with the wall?
Your Answer:
Determine the momentum of a (4.600x10^5) kg airplane traveling southwest at (6.1x10^2) km/h.
Note: Your answer is assumed to be reduced to the highest power possible.
Your Answer:
I. Solve the following problems about circular motions.
1. What is the tangential acceleration of the object if it accelerates uniformly in circular motion with changes in velocity of 80 m/s an in the total changes of time of 25 seconds?
2. The ball is tied to a string to whirl it having a radius of 50 cm at a velocity of 1.2 m/s. What will be the acceleration of the ball?
3. What is the acceleration of the bicycle if the velocity is 1.5 m/s in a circular path with the radius of 75 meters?
4. A jeepney follows a circular road with a radius of 300 meters at a speed of 30 m/s. What is the magnitude of the jeepney’s acceleration?
5. A 450 kg jeep taking a turn on a 350 m radius road at 22 m/s. Calculate the centripetal force exerted on the jeep.
A 5 kg block lies on a rough horizontal surface. The coefficient of static friction μs = 0.22. It is connected to another 3 kg block by a string that passes a frictionless pulley as shown in the figure below.
a. Find the unbalanced force, b. Find the acceleration of the blocks, and c. Find the tension T in the string
a student is given the following apparatus in order to find the density of a piece of raw 100 gram nature rule sweet table per vote on which the rule will balance measuring cylinder that is big enough for the piece of rock to fit inside cotton water.
Determine the power output for a motor that exerts an average force of 890 N in order to push large boxes for a distance of 1200 cm for 1/5 of a minute.
