1. A football player kicks a ball with a mass of 0.75 kg. The average acceleration of the football was 11.2 m/s². How much force
did the kicker supply to the football?
a. Formula used:
b. Show your work:
2. A car can go from rest to a velocity of 12 m/s East in 12 seconds. What is the acceleration of the car?
a. Formula to use: acceleration = change in velocity/time
b. Show your work:
a. Formula used:
b. Show your work:
2. A car can go from rest to a velocity of 12 m/s East in 12 seconds. What is the acceleration of the car?
a. Formula to use: acceleration = change in velocity/time
b. Show your work:
1 answer:
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Answer:
Their velocity after the impact is 20.85 m/s.
Explanation:
Given that,
Mass of falcon,
Mass of dove,
Initial speed of the falcon,
Initial speed of the dove,
We need to find the final velocity after the impact. When the falcon catches the dove, it will becomes the case of inelastic collision. The conservation of momentum will be :
So, their velocity after the impact is 20.85 m/s.
Answer:
The maximum height attained by the object and the number of seconds are 128 ft and 4 sec.
Explanation:
Given that,
Initial velocity u= 128 ft/sec
Equation of height
....(I)
(a). We need to calculate the maximum height
Firstly we need to calculate the time
From equation (I)
Now, for maximum height
Put the value of t in equation (I)
(b). The number of seconds it takes the object to hit the ground.
We know that, when the object reaches ground the height becomes zero
Hence, The maximum height attained by the object and the number of seconds are 128 ft and 4 sec.