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WINSTONCH [101]
2 years ago
11

Give an example of something you could do to reduce friction.

Physics
2 answers:
Archy [21]2 years ago
5 0
Put oil on a table, that would reduce friction
stich3 [128]2 years ago
4 0

Answer:

There are a number of ways to reduce friction:

Rough surfaces produce more friction and smooth surfaces reduce friction. Lubrication is another way to make a surface smoother. ... Reduce the forces acting on the surfaces. Reduce the contact between the surfaces.

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Find Vxl and Vyl of a pumpkin launched at a velocity of 55 m/s at an angle of 20 degrees
Vinvika [58]

Answer:

             

Explanation:

is  A projectile is any object on which the only force acting is gravity and air resistance (drag).

Examples of projectiles are:

baseballs and softballs in the air after being hit by the bat

golf balls hit by a club

objects dropped from aircraft, such as people (skydivers), bombs, crates of food being dropped to refugees

objects launched by cannons, such as cannonballs, shells, and circus performers

Once the baseball, softball, golf ball, skydiver, bomb, crate, cannonball, shell, or clown are no longer touching the bat, club, aircraft, or cannon, and are in the air with only gravity and slight air resistance acting on it, then it is a projectile.

Here is an online projectile motion applets to play with, just for fun.

Unless otherwise stated in a particular problem or discussion, we will be ignoring the effects of air resistance.

The key to understanding the motion of projectiles is that the horizontal motion and the vertical motion of the projectile are independent of each other. So we can write separate equations for the displacement of the projectile in the horizontal (x) and vertical (y) directions.

                         

The only common variable between these two equations is t, the time. Because in projectile problems there is usually no acceleration (i.e. we ignore air resistance) in the horizontal direction, we can write

           

The velocity components follow the same equations we used for one-dimensional motion.

                             

Because there is usually no acceleration in the x direction, the x-velocity is constant.

3 0
2 years ago
Am I correct?? Will give brainliest
Anna35 [415]
Yes that looks correct to me. good luck!!
5 0
3 years ago
The car starts from a room with a constant acceleration of 5 ms-2. What path will it pass in 6 seconds and what speed will it re
Kobotan [32]

Answer: The speed will be  30 m/s .

Explanation:

Given: Initial velocity of the car: u = 0 m/s

Constant Acceleration: a = 5 m/s²

Time: t= 6 seconds

To find: Final velocity(v)

Formula:  v = u+at

Substitute values in the formula, we get

v=  0+(5)(6) m/s

⇒ v= 30 m/s

i.e. Final velocity = 30 m/s

Hence, the speed will be 30 m/s .

4 0
2 years ago
A student is standing 8 m from a roaring truck engine that is measured at 20 dB. The student moves 4 m closer to
Ipatiy [6.2K]

Answer:80 dB

Explanation:

5 0
3 years ago
Which collects light in a reflecting telescope?
Alecsey [184]
Concave lens. These are used in making the objectives of reflection telescopes
4 0
3 years ago
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