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docker41 [41]
3 years ago
8

a baseball is traveling (=20m/s) and us hit by a bat. it leaves the bat traveling (-30 m/s). What is the change in the velocity?

remember that direction is what makes velocity diffrent speed.
Physics
1 answer:
Tasya [4]3 years ago
3 0
The change in velocity from 30 m/s north to 40 m/s south is a change of 70 m/s south
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The power in an electrical circuit is given by the equation P = I2R, where I is the current flowing through the circuit and R is
kiruha [24]

Answer:

Explanation: Here we have given a direct equation . There for no need to worry .

P = I²×R

P = (12)² ×100

P = 14400W = 14.4 kW

For second one

P = I² ×R

200 = I²×150

I = √200/150

I = 1.15 A

5 0
3 years ago
The image below shows a large, warm ocean next to a continent with a coastal mountain range.
alexandr1967 [171]
I think d because the water can make the humidity go down and make the air cool
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3 years ago
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A car travels in a straight line with an average velocity of 80 km/h for 2.5 h and then with an average velocity of 40 km/h for
maks197457 [2]

Answer:

260 km

65 km/hr

Explanation:

The displacement of an object is the distance moved by that object in a particular direction.

velocity = displacement / time, therefore,

Displacement = velocity * time.

Total displacement for the 4 HR trip = displacement for 2.5 hr + displacement for 1.5 hr

total displacement = (80 * 2.5) + (40 * 1.5)

Total displacement = 200 + 60

Total displacement = 260 Km

average velocity for the total trip = total displacement / total time taken

average velocity = 260 km/ 4 hr

average velocity = 65 km/hr

7 0
3 years ago
Some solids exist in his regular structure known as a lattice true or false ​
aleksklad [387]

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B.) The cake rises as gas bubbles form in the baking cake.

Explanation:

I got A on the quiz

7 0
3 years ago
An emergency relief plane is dropping a care package from a plane to a group of medical personnel working for a relief agency in
ipn [44]

Answer:

The altitude of the plane is 379.5 m.

Explanation:

Initial horizontal velocity, u = 59.1 m/s

Horizontal distance, d = 521 m

let the time taken by the packet to cover the distance is t.

Horizontal distance = horizontal velocity x time

521 = 59.1 x t

t = 8.8 s

let the vertical height is h .

Use second equation of motion in vertical direction.

h = u t  + 0.5 gt^2\\\\h = 0 + 4.9 \times 8.8\times8.8\\\\h= 379.5 m

7 0
2 years ago
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