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AVprozaik [17]
3 years ago
15

While riding in a moving car, you toss an egg directly upward. Does the egg tend to land behind you, in front of you, or back in

your hands if the car is (a) traveling at a constant speed, (b) increasing in speed, and (c) decreasing in speed?
Physics
1 answer:
bazaltina [42]3 years ago
4 0

Answer:

Explanation:

The movement of a body can be analyzed using New's first law. In an inertial frame (without acceleration) every body is kept at rest or moving at constant speed until there is an external force that changes this state

Let's analyze these cases in the framework of this first law

a) If the vehicle is going at constant speed the two bodies (the egg and the hands) do not change movement so he had returned to the hands

b) If the vehicle accelerates the passenger goes faster, but the egg that is not subject to anything does not change the movement, so it falls behind the passenger

c) If the vehicle slows down, the passenger reduces its speed and the distance traveled in time, but the egg that is not attached follows its movement and falls in front of the passenger.

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Object 1 is undergoing uniform circular motion at a radius of 10 cm. Object 2 is undergoing uniform circular motion at a radius
ElenaW [278]

Answer:

The first object is experiencing a larger centripetal force because its radius is smaller compared to the second object.

Explanation:

Given;

radius of the first object, r₁ = 10 cm = 0.1 m

radius of the second object, r₂ = 0.2 m

let the mass of the two objects, = m

let the speed of the two objects = v

The centripetal force of the first object is given by;

F_c_1 = \frac{mv^2}{r_1} \\\\F_c_1 = \frac{mv^2}{0.1}\\\\F_c_1 =  10mv^2

The centripetal force of the second object is given by;

F_c_2 = \frac{mv^2}{r_2} \\\\F_c_2 = \frac{mv^2}{0.2}\\\\F_c_1 =  5mv^2

Therefore, the first object is experiencing a larger centripetal force because its radius is smaller compared to the second object.

3 0
3 years ago
passengers on an airplane move from rest to 73 meters per second before the airplane takes off. if the airplane takes 100 second
Brrunno [24]

Answer:

0.73m/s2

Explanation:

The speed at which the passengers move is the final speed of the plane

Hence acceleration = V-U/t; change in velocity and t is time taken. U is the initial velocity which is 0m/s

a = 73-0/100= 0.73m/s2

3 0
3 years ago
Suppose the electric company charges 10 fils per kW h. How much does it cost to use a 125 watt lamp 4 hours a day for 30 days? A
ivanzaharov [21]

Answer:

150 fils

Explanation:

Power = 125 Watt

Time 4 hours a day

Energy per day = Power x time per day = 125 x 4 = 500 watt hour

Energy for 30 days = 500 x 30 watt hour = 15000 watt hour = 15 KWH

Cost of 1 KWH = 10 fils

Cost of 15 KWH = 15 x 10 = 150 fils

5 0
3 years ago
Spheres are not perfect in space. But <> is in the cause of their shape. ​
MariettaO [177]

Answer:

\boxed {  \tt{gravitational \: pull(force)}}

8 0
3 years ago
The force that keeps two surfaces at rest from sliding over each other is
natka813 [3]
Friction is the correct answer.
8 0
3 years ago
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