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Nitella [24]
2 years ago
13

Doug is driving a golf ball off the tee. His downswing takes 0.50sec from the top of the swing until ball impact. At the top of

the swing, the club's angular velocity is zero; at the instant of ball impact, the club's angular velocity is 30rad/s. The swing moment of inertia of the club about the grip is 0.220kg*m^2. What average torque does Doug exert on the golf club during the downswing?
A. 13.2
B. 26.4
C. 64.6
D. 106.8
Physics
1 answer:
Dmitry [639]2 years ago
6 0
D.eeeeeeezzzzzzzz nuuuuutttttssss!
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B) the current will decrease 

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3 years ago
What is the difference between vector and scalar ?
ddd [48]
The easiest, non-technical way to think about it is like this:

-- A scalar is a quantity that has a size but no direction.
Those include temperature, speed, cost, volume, distance, etc.

One number is all there is to know about it, and there's no way you can
add more of the same stuff to it that would cancel both of them out.

-- A vector is a quantity that has a size and also has a direction.
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It takes more than one number to completely describe one of these.
Also, if you combine two of the same vector quantity in different ways,
you can get different results, and they can even cancel each other out.

Here are some examples.  Notice that in each of these examples,
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If you're walking inside a bus, and the bus is driving along the road,
then your velocity along the road is the sum of your walking velocity
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-- If you're walking north up the middle of the bus at 2 miles per hour
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-- If you're walking south towards the back of the bus at 2 miles per hour
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-- If you're walking south towards the back of the bus at 2 miles per hour
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--  If you're in a big railroad flat-car that's rolling north along the track
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7 0
3 years ago
If you lose control of your vehicle and collide with a fixed object, such as a tree, at 60 m.p.h., the force of impact is the sa
My name is Ann [436]
You can compare the velocity of the car, 60 mph, with the velocity that a mass would acquire when falls from certain height.

First, convert 60 mph to m/s:

60 miles/h * 1.60 km/mile * 1000 m/km * 1h/3600s = 26.67 m/s

Second, calculate from what height a body in free fall reachs 26.67 m/s velocity when hits the floor.

free fall => Vf^2 = 2g*H => H = Vf^2 / (2g)

H = (26.67m/s)^2 / (2*9.8 m/s) = 36.2 m

If you consider that the height between the floors of a building is approximately 3.6 m, you get 36.2 m / 3.6 m/floor = 10 floors.

Then, you conclude that the force of impact is the same as driving you vehicle off a 10 story building.
7 0
3 years ago
Ok plz answer and tell me how to do it
kirza4 [7]
Answer: 25N

method: total force in the right hand direction is 100N and total force in the left hand direction is 125N. To get the net force, we add forces if they are in the same direction and substract if they are in opposite directions. since 100N and 125N are in opposite directions, we substract the larger value from the smaller value. Then we get 25N in the left hand direction as the final answer.
4 0
3 years ago
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Answer:

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6 0
2 years ago
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