Homework Answers
Concept: we use equations of kinematics for
motion in one dimension under gravity for solution as shown below,
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Please explain Chapter 02, Problem 44 A dynamite blast at a quarry launches a rock straight...
A dynamite blast at a quarry launches a rock straight upward, and 2.1 s later it...
A dynamite blast at a quarry launches a rock straight upward, and 2.1 s later it is rising at a rate of 11 m/s. Assuming air resistance has no effect on the rock, calculate its speed (a) at launch and (b) 4.8 s after launch.
A dynamite blast at a quarry launches a rock straight upward, and 1.8 s later it...
A dynamite blast at a quarry launches a rock straight upward, and 1.8 s later it is rising at a rate of 12 m/s. Assuming air resistance has no effect on the rock, calculate its speed (a) at launch and (b) 5.4 s after launch.
A dynamite blast at a quarry launches a rock straight upward, and 2.4 s later it...
A dynamite blast at a quarry launches a rock straight upward, and 2.4 s later it is rising at a rate of 15 m/s. Assuming air resistance has no effect on the rock, calculate its speed (a) at launch and (b) 4.6 s after launch.
A dynamite blast at a quarry launches a rock straight upward, and 1.6 s later it...
A dynamite blast at a quarry launches a rock straight upward, and 1.6 s later it is rising at a rate of 19 m/s. Assuming air resistance has no effect on the rock, calculate its speed (a) at launch and (b) 6.0 s after launch.
A dynamite blast at a quarry launches a rock straight upward, and 1.7 s later it...
A dynamite blast at a quarry launches a rock straight upward, and 1.7 s later it is rising at a rate of 16 m/s. Assuming air resistance has no effect on the rock, calculate its speed (a) at launch and (b) 4.0 s after launch.
A dynamite blast at a quarry launches a chunk of rock straight upward, and 2.1 s...
A dynamite blast at a quarry launches a chunk of rock straight upward, and 2.1 s later it is rising at a speed of 20 m/s. Calculate its speed (a) at launch and (b) 4.2 s after the launch. Let's model this situation as if it's a case of constant acceleration of 9.8 m/s downward at launch at 4.2 s after launch m/s
A dynamite blast at a quarry launches a chunk of rock straight upward, and 2.1 s...
A dynamite blast at a quarry launches a chunk of rock straight upward, and 2.1 s later it is rising at a speed of 20 m/s. Calculate its speed (a) at launch and (b) 4.2 s after the launch. Let's model this situation as if it's a case of constant acceleration of 9.8 m/s downward at launch at 4.2 s after launch m/s
Please explain Chapter 02, Problem 49 A hot-air balloon is rising upward with a constant speed...
Please explain
Chapter 02, Problem 49 A hot-air balloon is rising upward with a constant speed of 3.01 m/s. When the balloon is 3.40 m above the ground, the balloonist accidentally drops a compass over the side of the balloon. How much time elapses before the compass hits the ground? Number Units the tolerance is +7-2%
Chapter 02, Problem 62 Your answer is partially correct. Try again. A model rocket blasts off...
Chapter 02, Problem 62 Your answer is partially correct. Try again. A model rocket blasts off from the ground, rising straight upward with a constant acceleration that has a magnitude of 97.7 m/s2 for 1.53 seconds, at which point its fuel abruptly runs out. Air resistance has no effect on its flight. What maximum altitude (above the ground) will the rocket reach? 1140.02 Number Units the tolerance is +/-2% Chapter 04, Problem 005 A person in a kayak starts paddling,...
Chapter 02, Problem 024 Certain mushrooms launch their spores by a catapult mechanism. As water condenses...
Chapter 02, Problem 024 Certain mushrooms launch their spores by a catapult mechanism. As water condenses from the air onto a spotre that is attached to the mushroom, a drop grows on one side of the spore and a film grows on the other side. The spore is bent over by the rop's weight, but when the film reaches the drop, the drop's water suddenly spreads into the film and the spore springs upward so rapidly that it is slung...
A dynamite blast at a quarry launches a chunk of rock straight upward, and 2.1 s later it is rising at a speed of 20 m/s. Calculate its speed (a) at launch and (b) 4.2 s after the launch. Let's model this situation as if it's a case of constant acceleration of 9.8 m/s downward at launch at 4.2 s after launch m/s
A dynamite blast at a quarry launches a chunk of rock straight upward, and 2.1 s later it is rising at a speed of 20 m/s. Calculate its speed (a) at launch and (b) 4.2 s after the launch. Let's model this situation as if it's a case of constant acceleration of 9.8 m/s downward at launch at 4.2 s after launch m/s
Please explain
Chapter 02, Problem 49 A hot-air balloon is rising upward with a constant speed of 3.01 m/s. When the balloon is 3.40 m above the ground, the balloonist accidentally drops a compass over the side of the balloon. How much time elapses before the compass hits the ground? Number Units the tolerance is +7-2%
Chapter 02, Problem 62 Your answer is partially correct. Try again. A model rocket blasts off from the ground, rising straight upward with a constant acceleration that has a magnitude of 97.7 m/s2 for 1.53 seconds, at which point its fuel abruptly runs out. Air resistance has no effect on its flight. What maximum altitude (above the ground) will the rocket reach? 1140.02 Number Units the tolerance is +/-2% Chapter 04, Problem 005 A person in a kayak starts paddling,...
Chapter 02, Problem 024 Certain mushrooms launch their spores by a catapult mechanism. As water condenses from the air onto a spotre that is attached to the mushroom, a drop grows on one side of the spore and a film grows on the other side. The spore is bent over by the rop's weight, but when the film reaches the drop, the drop's water suddenly spreads into the film and the spore springs upward so rapidly that it is slung...
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