Answer:
how them what happens when something is unfair
Explanation:
Answer:
( 688.29 , 276.66 ) meters
Explanation:
Break into horizontal and vertical components
x = 100 cos 55 = 57.36 m/s
the x coordinate is then 12 seconds * 57.36 m/s =<u> 688.29 meters </u>
y coordinate is a bit more complex because of the curved path due to gravity
Original y velocity = 100 sin 55
y = vo t - 1/2 (9.81)(t^2)
y = 100 sin 55 (12) - 1/2 (9.81) (12)^2
yf = <u>276.66 meters </u>
<u> </u>
Answer:
The powerful mechanical advantage of a pulley is in using many pulleys at once. Combining multiple pulleys decreases the amount of force necessary to move an object by increasing the amount of rope used to raise the object. The amount of rope can be found by rope = original amount of rope x the number of pulleys
Explanation:
The definition of torque alows to find the force of the engine of a truck is 257.5 N
Torque is the vectorial product of force and distance,
τ = F x r
The bold letters indicate vectors, τ is the torque, F the force and r the distance
The magnitude of this expression is
τ = F r sin θ
In trucks the distance from the motorcycle to the pivot point on the rear wheels is approximately 2 m and the angle between the force and the wheel axis is 90º
F =
Indicate that the torque is 515 N m, let's calculate
F = 515/2
F = 257.5 N
In conclusion, using the definition of torque we can find the force of a truck engine is 257.5 N
Learn more here: brainly.com/question/6855614
Answer:
1) Height of bridge = 12.4 m
2) Velocity when the swimmers hit the water = 15.58 m/s
3) Time of flight if the bridge was 2.5 times as high = 2.52 s
Explanation:
Using the equations of motion,
g = 9.8 m/s², y = H = ? t = 1.59 s
Initial velocity, u = 0 m/s,
final velocity, v = ?
Total Time of fall, t = 1.59
1) y = ut + gt²/2
y = 0 + 9.8(1.59)²/2
y = 12.4 m
2) v = u + gt
v = 0 + (9.8 × 1.59)
v = 15.58 m/s
3) y = ut + gt²/2
y = 2.5 × 12.4 = 31 m
u = 0 m/s
g = 9.8 m/s²
31 = 0 + 9.8t²/2
4.9t² = 31
t² = 31/4.9
t = 2.52 s