All categories

3 years ago

27. A 0.150 kg baseball is thrown upward with an initial

Physics

1 answer:

Tema [17]3 years ago

4 0

Answer:

a. $1.47N$

b. $1.47N$

Explanation:

Given:

Mass of the baseball = $0.150kg$

The initial velocity of the baseball = 20m/s

The force acting on the baseball is only due to gravity and the air resistance is negligible. The baseball acceleration is constant due to gravity.

According to Newton's second law:

$F_{w} =mg$ ----------(1)

where mass of the baseball $m = 0.150kgAnd acceleration due to gravity [tex]g = 9.8m/s^{2}$

Put all the value in equation 1.

$F_{w} =0.150\times -9.8$

$F_{w} =-1.47N$

Therefore, the force on the ball when it reaches half of its maximum height is $1.47N$ .

Similarly, the force acting on the ball when its peak $1.47N$ .

You might be interested in

The function of the __________is to store and supply fuel to the cylinder chamber where it can be mixed with air, vaporized, and

erica [24]

Answer:

The function of the <em><u>fuel system</u></em> is to store and supply fuel to the cylinder chamber where it can be mixed with air, vaporized, and burned to produce energy.

hope it helps (^^)

# Cary on learning

3 0

2 years ago

The angular velocity of a 755-g wheel 15.0 cm in diameter is given by the equation ω(t) = (2.00 rad/s2)t + (1.00 rad/s4)t 3. (a)

Lunna [17]

Answer:

The number of radians turned by the wheel in 2s is $\theta= 8\ radians$

The angular acceleration is $\alpha =14 rad/s^2$

Explanation:

The angular velocity is given as

$w(t) = (2.00 \ rda/s^2)t + (1.00 rad /s^4)t^3$

Now generally the integral of angular velocity gives angular displacement

So integrating the equation of angular velocity through the limit 0 to 2 will gives us the angular displacement for 2 sec

This is mathematically evaluated as

$\theta(t ) = \int\limits^2_0 {2t + t^3} \, dt$

$= [\frac{2t^2}{2} + \frac{t^4}{4}] \left\{ 2} \atop {0}} \right.$

$= [\frac{2(2^2)}{2} + \frac{2^4}{4}] - 0$

$= 4 +4$

$\theta= 8\ radians$

Now generally the derivative of angular velocity gives angular acceleration

So the value of the derivative of angular velocity equation at t= 2 gives us the angular acceleration

This is mathematically evaluated as

$\frac{dw}{dt} = \alpha (t) = 2 + 3t^2$

so at t=2

$\alpha (2) = 2 +3(2)^2$

$\alpha =14 rad/s^2$

7 0

3 years ago

Quantum mechanics applies to A) subatomic, atomic, nanometer-size, and micrometer-size systems. B) nanometer, micrometer, and ki

Leto [7]

Answer: D) subatomic, atomic, and nanometer-size systems.

Explanation: Quantum mechanics applies to subatomic, atomic, and nanometer-size systems.

8 0

3 years ago

What is the latitude and longitude of Washington D.C.

slava [35]

The latitude and longitude for Washington D.C. is 38.9072° N, 77.0369° W.

5 0

3 years ago

Read 2 more answers

Which type of bonds hold two or more water molecules together

Afina-wow [57]

Answer:

Hydrogen bond.

Explanation:

It is an intermolecular bonding interaction between two molecules of different electronegative values or bonding between lone pairs of electron rich molecules.

Hydrogen-bonding forms in liquid water as the hydrogen atoms of one water molecule are then attracted towards the oxygen atom of a neighboring water molecule resulting in a general proton shared by two lone electron pairs.

3 0

3 years ago