1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
dangina [55]
2 years ago
5

8. As you throw a 2.00 x 102 g baseball, your hand moves a distance of 80.0 cm before you release the ball. If you exert an aver

age force of 55.0 N on the ball while it is in your hand, determine:
Physics
1 answer:
olga nikolaevna [1]2 years ago
4 0

Answer:

v = 21.0 m / s

Explanation:

In this exercise, it is generally asked to determine the final speed of the ball.

Let's start by finding the acceleration of it

            F = ma

            a = F / m

let's reduce the magnitudes to the SI system

            m = 2.00 102 g (1kg / 1000g) = 0.200 kg

            x = 80.0 cm (1m / 100 cm) = 0.800 m

we calculate

            a = 55.0 / 0.200

            a = 275 m / s

now we can use kinematics, where the ball has an initial velocity of zero and travels a distance x = 80 cm with the force

            v² = v₀² + 2 a x

            v² = 0 + 2ax

            v = \sqrt{2ax}

let's calculate

           v = \sqrt{2 \ 275 \ 0.800}Ra 2 275 0.800

           v = 20.98 m / s

if we use the criteria of significant figures

           v = 21.0 m / s

You might be interested in
After observing a moth that is camouflaged against dark-colored bark, a scientist asks a question. The scientist discovers that
Rasek [7]
Because of how it's worded the answer would most likely be number four                                                                                       

6 0
3 years ago
Read 2 more answers
An astronaut stands on the surface of an asteroid. The astronaut then jumps such that the astronaut is no longer in contact with
Anna71 [15]

(D) The gravitational force between the astronaut and the asteroid.

Reason :

All the other forces given in the options, except (D), doesn't account for the motion of the astronaut. They are the forces that act between nucleons or atoms and neither of them accounts for an objects motion.

6 0
3 years ago
If the net external force acting on a system is zero , then the total momentum of the system is zero
Neporo4naja [7]
If net external force acting on the system is zero, momentum is conserved. That means, initial and final momentum are same → total momentum of the system is zero.
8 0
3 years ago
Read 2 more answers
Which of the following laws relates emf, potential, current, and resistance in a circuit? Ohm’s Law Newton’s Law of Gravity Coul
lisabon 2012 [21]
I think it’s Ohm’s Law.
3 0
3 years ago
Read 2 more answers
One terminal of a car battery is said to be connected to “ground.” since it is not really connected to the ground, what is meant
GalinKa [24]
This expression means that the negative terminal (-) is connected to the metal chassis or engine, which means that all voltages used for the electrical devices in the car are measured with respect to the car's chassis or engine. 
Today's vehicles have a negative ground system, which means that the vehicle's steel frame or chassis is directly connected to the negative side of the battery via the negative battery cable. 
3 0
3 years ago
Other questions:
  • •1 if a saturn v rocket with an apollo spacecraft attached had a combined mass of 2.9 × 105 kg and reached a speed of 11.2 km/s,
    12·1 answer
  • What is the word for the definition of an electron in the highest occupied energy level of an atom
    6·1 answer
  • A manufacturer of printed circuit boards has a design capacity of 1,000 boards per day. the effective capacity, however, is 700
    15·1 answer
  • 1. A tourist accidentally drops a camera from a 40.0 m high bridge and it falls for 2.85 seconds. If g = 9.81 m/s2 and air resis
    10·1 answer
  • Which statement describes the process of subduction? Convection currents pull a plate into the mantle. One plate slides beneath
    8·2 answers
  • Convert 81.9 km into meters.
    9·1 answer
  • PLEASE HELP ASAPPPPPPPPP
    13·1 answer
  • The atmosphere of Mercury and Mars are very thin. What effect does the thin atmosphere have on the temperature on the surface of
    13·1 answer
  • consisting of an electric coil on a small paddle held over an area of the brain, __________ deactivates areas of the brain, allo
    12·1 answer
  • The natural enzyme reaction in food slowly breaks it down and eventually causes it to spoil. what 2 things halt this enzyme reac
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!