4. What is free fall? How is it C different than movement in answers.

Q: Zach, whose mass is 70 kg, is in an elevator going up at a constant speed of 2.0 m/s. Match the…

A:

Q: An astronaut is weighed before he sets of to the moon. He has a mass of 80 kg. a. What will his…

A: Given: Mass of an astronaut, M = 80 kg

Q: Objects with greater have greater inertia. a. friction O b. speed c. mass O d. force

A: Object with greater ___ have greater inertia

Q: How much would a 50-g instrument weigh on Saturn, with a gravity of 9.0 ms2? A. 50 G B. 0.18 G C.…

A: Mass of instrument = 50 g = 0.05 kg acceleration due to gravity on the surface of Saturn = 9 m/s2

Q: Problem 1: Given Newton's First Law of Motion, what do we reasonably expect an object to do given…

A:

Q: 46. Neglecting air resistance and taking g as 10 m s², the height fallen by a fruit from rest to a…

A: Recall Vf2=Vi2+2ghWhere h is required heightVf=10m/s Vi=0

Q: A projectile is fired from ground level at an angle above the horizontal on an airless planet where…

A: 19.giveng=10 m/s2x component of velocity , ux=86.6 m/sy component of velocity, uy=50.0 m/s

Q: In terms of Newton's Universal Law of Gravitation, explain why Galileo found that all objects fall…

A: Prior to Galileo, it was thought that the mass of an item has a…

Q: Q14. Determine the force of gravity, the normal force, the force of friction, the net force, and the…

A:

Q: What will a scale that measures Newtons read for the weight of a 55.0kg person in an elevator that…

A:

Q: What is the force of gravitational attraction between the earth (m = 5.98 x10^24 kg) and a 70-kg…

A: Mass of the earth, m1= 5.98×1024kg Mass of the student, m2= 70 kg Distance between the center of the…

Q: Two friends are trying to move a heavy box of stuff. One friend pulls north with 40 newtons of force…

A: Dear student, according to expert guidelines I am allowed to answer only one problem in a single…

Q: If the box was moved to a planet that was half as massive as Earth, the magnitude of the box's wei…

A:

Q: Calculate the mass of an astronaut that weighs 291N on the surface of the moon; the gravity of the…

A: The expression for mass in term of weight is m=Wg=W16gE

Q: Newton's first law is known as law of inertia. what is inertia. Choose all that apply. A.…

A: Required :  What is inertia.

Q: Consider the elements Bismuth (Bi) and Calcium (Ca). Their atomic mass, density and electronic sl…

A:

Q: 13 Which of these statements about Galileo is not true? He built a telescope which he used to…

A: Solution: Galileo made a telescope from the newly made spyglass at that time. He used his telescope…

Q: Use the free body diagram and Newton's 2nd law to determine an expression for the Tension in the…

A: as shown in figure, in vertical direction for equilibrium net force Fv must be zero. net force in…

Q: Problem 6: A block having a mass of m is suspended via two cables as shown in the figure. We will…

A: We will break tension force into horizontal and vertical components.

Q: Consider a three-dimensional infinite well modeled as a cube of side L. The width L of the cube is…

A:

Q: If a man weighs 960 N on the Earth, what would he weigh on Jupiter, where the acceleration due to…

A: we know that  weight = mass * acceleration due to gravity

Q: Problem 8: A baseball of mass m = 0.59 kg is spun vertically on a massless string of length L = 0.61…

A: mass (m) = 0.59 kg Tmax = 10.6 N L = 0.61 m

Q: Force and Free - body Diagrams For each of the following objects. 1. Draw a Free body diagram. 2.…

A: Disclaimer: “Since you have asked posted a question with multiple sub-parts, we will solve the first…

Q: astronauts appear wieghtless in space becaue 1. there is no gravity 2.there is no floor pushing…

A: To determine: Correct option for the given statement.

Q: Problem 5: Two blocks are stacked as shown to the right and rest on a frictionless surface. There is…

A:

Q: Problem 7: Two blocks, which can be modeled as point masses, are connected by a massless string…

A: mass kept on table (M1) = 1.4 kg Hanging mass (M2) = 2.7 kg r = 0.85 m

Q: a sentence that demonstrates its meaning in physic term. Not definition 1. Vectors 2. motion…

A: Vector : The movement of an object from one point to another point, which has both magnitude and…

Q: A stone is dropped from a height of 45 m. Approximately how long does it take to hit the ground?…

A: Given data:  Initial velocity (v0) = 0 m/s Height (h) = 45 m Required:  Time (t) taken to hit the…

Q: A skier stands at the top of a 25 degree snowy slope. The coefficient of friction between the skis…

A:

Q: A rock is dropped from 20 feet above the surface of the Earth. Which of the following is true? a.…

A: Given quantities: height from which a rock is dropped (H) = 20 feet initial velocity (u) = 0…

Q: Choose 1 to answer from the following: 1. A stone is thrown upward with a velocity of 30 m/s.…

A:

Q: What is drag? What causes it? Why do we usually try to minimize it?

A:

Q: An object is thrown upwards with a velocity of 30 m/s near the surface of the earth. After two…

A: Velocity, u = 30 m/sTime, t = 2 sAcceleration due to gravity, g = -9.8 m/s²

Q: If an elevator is descending toward the ground floor of a building and slowing down, then its: Group…

A: Given that , elevator is descending toward the ground floor of a building and slowing down . It…

Q: A 150-kg bag of rocks weighs 3200 N on Planet X. What is the acceleration due to gravity of Planet…

A: weighs  w=mg

Q: Which of the following quantities is 8. described by both a magnitude and a direction? A.…

A: As per our guidelines, we are supposed to answer only first one question in case of multiple…

Q: Calculate the total gravitational force (magnitude and direction) acting on each of the three masses…

A:

Q: If you throw a ball with an initial horizontal velocity of 20 m/s and an initial vertical velocity…

A:

Q: Your pulling a 5kg box horizontally to the right with a force of 60N and there is a friction force…

A:

Q: Zach, whose mass is 70 kg, is in an elevator going up at a constant speed of 2.0 m/s. Match the…

A:

Q: Basics of Forces and Motion Use a virtual simulation to explore the basics of forces and motion. To…

A: Since you have asked multiple question, we will solve the first question for you. If you want any…

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.