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lilavasa [31]
3 years ago
9

Fred is doing an experiment with basketballs. He drops one basketball while standing on a chair, and drops another basketball wh

ile standing on the roof. Which basketball will probably bounce the highest?
A. The basketball from the chair
B. The basketball from the roof
C. They will bounce the same
D. Neither ball will bounce
Physics
1 answer:
soldi70 [24.7K]3 years ago
4 0
B

Since it’s from the roof, the basketball will have a greater impact on the ground, causing it to bounce higher.

So B is your answer
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A 480 g peregrine falcon reaches a speed of 75 m/s in a vertical dive called a stoop. If we assume that the falcon speeds up und
Svet_ta [14]

The minimum height of the dive needed to achieve the given speed is v = 69 m/s is 242.9 m.

Given information:

The mass of peregrine falcon is,  m = 480

The final speed reached by the peregrine falcon in a vertical dive is, v = 69 m/s

It is given that the falcon is diving vertically downward. It can be compared with the same situation as the free-falling object under the effect of gravity only. So, the initial velocity of the falcon will be u = 0 m/s  as the motion starts with rest.

The value of the gravitational acceleration of gravity is, g = 9.80 m/s²

Now, using the third equation of motion, the minimum height  required for the final speed will be,

v² - u² = 2gh

69² - 0² = 2 × 9.8 × h

h = 242.9m.

Therefore, the minimum height of the dive needed to achieve the given speed is 242.9 m.

Learn more about falcon speeds at

brainly.com/question/12449855

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6 0
2 years ago
Which of these charges is experiencing the electric field with the largest magnitude? A 2C charge acted on by a 4 N electric for
Pavlova-9 [17]

Answer:

The highest electric field is experienced by a 2 C charge acted on by a 6 N electric force. Its magnitude is 3 N.

Explanation:

The formula for electric field is given as:

E = F/q

where,

E = Electric field

F = Electric Force

q = Charge Experiencing Force

Now, we apply this formula to all the cases given in question.

A) <u>A 2C charge acted on by a 4 N electric force</u>

F = 4 N

q = 2 C

Therefore,

E = 4 N/2 C = 2 N/C

B) <u>A 3 C charge acted on by a 5 N electric force</u>

F = 5 N

q = 3 C

Therefore,

E = 5 N/3 C = 1.67 N/C

C) <u>A 4 C charge acted on by a 6 N electric force</u>

F = 6 N

q = 4 C

Therefore,

E = 6 N/4 C = 1.5 N/C

D) <u>A 2 C charge acted on by a 6 N electric force</u>

F = 6 N

q = 2 C

Therefore,

E = 6 N/2 C = 3 N/C

E) <u>A 3 C charge acted on by a 3 N electric force</u>

F = 3 N

q = 3 C

Therefore,

E = 3 N/3 C = 1 N/C

F) <u>A 4 C charge acted on by a 2 N electric force</u>

F = 2 N

q = 4 C

Therefore,

E = 2 N/4 C = 0.5 N/C

The highest field is 3 N, which is found in part D.

<u>A 2 C charge acted on by a 6 N electric force</u>

3 0
4 years ago
What happens to momentum during a collision?...i give brainliest
Vlada [557]

Answer:

Momentum is the product of a moving object's mass and velocity . ... When two objects collide the total momentum before the collision is equal to the total momentum after the collision (in the absence of external forces). This is the law of conservation of momentum. It is true for all collisions.

Explanation:

7 0
3 years ago
One kind of baseball pitching machine works by rotating light and stiff rigid rod about a horizontal axis until the ball is movi
erastova [34]

Answer:

(a). The ball's centripetal acceleration is 16.17\times10^{2}\ m/s^2

(b). The magnitude of the net force is 232.9 N.

Explanation:

Given that,

Mass of baseball = 144 g

Speed = 81 mph = 36.2 m/s

Distance = 81 cm

(a). We need top calculate the ball's centripetal acceleration just before it is released

Using formula of centripetal acceleration

a=\dfrac{v^2}{r}

Where, v = speed

r  = radius

Put the value into the formula

a=\dfrac{(36.2)^2}{81\times10^{-2}}

a=1617.82\ m/s^2

a=16.17\times10^{2}\ m/s^2

(b). We need to calculate the magnitude of the net force that is acting on the ball just before it is released

Using formula of force

F=\dfrac{mv^2}{r}

Put the value into the formula

F=\dfrac{144\times10^{-3}\times(36.2)^2}{81\times10^{-2}}

F=232.9\ N

Hence, (a). The ball's centripetal acceleration is 16.17\times10^{2}\ m/s^2

(b). The magnitude of the net force is 232.9 N.

4 0
3 years ago
Which of the following is true of machines?
xz_007 [3.2K]
The right answer for the question that is being asked and shown above is that: "A. Machines increase the amount of force required to do a task. " The statement that is true about machines is that <span>A. Machines increase the amount of force required to do a task. </span>
6 0
3 years ago
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