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jek_recluse [69]
3 years ago
7

Tim is riding a bike at a velocity of 10m/s north. As he starts to climb a hill, his velocity decreases to 5 m/s north. Is the a

cceleration positive or negative? Calculate the acceleration.
Physics
1 answer:
ddd [48]3 years ago
3 0

Answer:

negative

Explanation:

He is decreasing acceleration. To calculate, imply do 10-5= 5, but since it is a decrease, we must say -5

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You wad up a piece of paper and throw it into the wastebasket. How far will
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The range of the piece of paper is C) 1.4 m

Explanation:

The motion of the piece of paper is the motion of a projectile, which consists of two separate motions:

- A uniform motion along the horizontal direction, with constant velocity

- A uniformly accelerated motion along the vertical direction, with constant acceleration (the acceleration of gravity, g=9.8 m/s^2)

From the equation of motion, it is possible to find an expression for the range (the total horizontal distance covered) of a projectile, which is given by:

d=\frac{u^2 sin 2\theta}{g}

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For the piece of paper in this problem,

u = 4.3 m/s

\theta=65^{\circ}

Substituting,

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Learn more about projectile motion:

brainly.com/question/8751410

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