Start your trial now! First week only $4.99!*arrow_forward*

Question

A ball is thrown up with initial speed of 80m/s.(a) How high does the ball go?
b) What is its speed at the end of 3s?
c) How high is it at that time?
What is its acceleration coming down?

Tagged in

Science

Physics

Find answers to questions asked by students like you.

Q: 4) A particle moves along with the path function s= 21 +1 in the form of the orbit y= 2×x. 7y (m) y=...

A: Click to see the answer

Q: Two point masses 3 kg and 5 kg are at 4 m and 8 m from the origin on x-axis. Locate the position of ...

A: From the origin, if m1 is at a distance r1 and m2 is at a distance r2 then the center of mass of the...

Q: A person swings a rock around on a string, causing it to sweep out in a circle of radius 0.53 m. If ...

A: For the given case, Acceleration experience by rock due to uniform circular motion is known as centr...

Q: Three identical blocks of mass m on a frictionless surface are connected by massless taut strings. A...

A: Click to see the answer

Q: A mass m = 4.25 kg is at the end of a horizontal spring on a frictionless horizontal surface. The ma...

A: The expression for mechanical energy is, E=12kA2 (I) k=spring ...

Q: A basketball with a mass of 0.6kg is dropped from rest. Just before striking the floor. it has a mom...

A: Solution: as given that m= 0.6 kg p =3.1 kgm/s

Q: What will happen to the mirror when you put it in a glass of water? Does it look straight? why does ...

A: When we put mirror in glass of water refraction of light happens . It does not look straight as ligh...

Q: T3 6.) If two different forces can accelerate the same block from rest to the same final speed, then...

A: The equation for the average power is given by, Pavg=Fcosθvavg Here, F is the magnitude of the force...

Q: 4. A bimetallic strip is made of metals A and B, with metal B having a larger expansion than A. On h...

A: Click to see the answer

Q: What is the maximum force on an aluminum rod with a 0.100-µC charge that you pass between the poles ...

A: Click to see the answer

Q: what is the power of a crane that lifts it uniformly in a hurry to a height of 5 meters during 5 sec...

A: The work done is calculated as, W=mghW=200×9.8×5W=9800 J

Q: A hydrogen atom is in a state with energy -1.51 eV. Using the Bohr model: (a) Calculate the angular ...

A: Click to see the answer

Q: 2. Jack and Jill are both helping to fetch a pail of vater in a bill that is 16 meters high. Each of...

A: Click to see the answer

Q: Use Ohm's law and Kirchhoff's laws to find the value of Rin the circuit shown. 2.6 Answer: R = 4 N.

A: Click to see the answer

Q: Find the net torque on the wheel in the figure below about the axle through O perpendicular to the p...

A: a = 9 cm b = 25 cm F1 = 10 N (east )F2 = 9 N (south)F3 = 12 N ( 30o South of west)Torque formula = R...

Q: During laser vision correction, a brief burst of 193-nm ultraviolet light is projected onto the corn...

A: Click to see the answer

Q: You have a cylindrical pond that has a diameter of 30 feet and has a depth of 5 feet. If you need to...

A: The diameter of the cylindrical pond is d = 30 ft. The depth of the cylindrical pond is h = 5 ft. Th...

Q: Starting from rest, a person pedals a bicycle such that the angular acceleration of the wheels is a ...

A: Speed =Distance Time Velocity =DisplacementTime ...

Q: A contestant in a winter games event pulls a 60.0 kg block of ice across a frozen lake with a rope o...

A: The mass of the ice block, m = 60.0 kg The coefficient of static friction, μs = 0.1 The coefficient ...

Q: A moonshiner makes the error of filling a glass jar to the brim and capping it tightly. The moonshin...

A: Expression for Bulk modulus k=V∆P∆V Rearrange in terms of ∆P ∆P=B∆VV=1.8×109 Nm25×10-3=9×106 Nm2m102...

Q: A helicopter lifts a 100kg crate straight up via cable, with an acceleration of 0.8m/s2. If the crat...

A: Solution: given that mass of crate m = 100 kg a = 0.8 m/s2 d = 5m

Q: How would you place two identical flat coils in contact so that they had the greatest mutual inducta...

A: Induction: Induction is the process in which the emf is induced by changing the magnetic flux.

Q: Three objects of equal mass m1 = m2 = m3 = 2.50 kg are located on the vertices of an equilateral t...

A: Click to see the answer

Q: A 525-g squirrel with a surface area of 910 cm2 falls from a 4.8-m tree to the ground. Estimate its ...

A: Click to see the answer

Q: T3 10.) A helicopter lifts a 100kg crate straight up via cable, with an acceleration of 0.8m/s2. If ...

A: Click to see the answer

Q: Mass A is 40 kg and mass B is 10 kg. The angle that the inclined plane makes with the horizontal is ...

A: Click to see the answer

Q: A beam resting on two pivots has a length of L = 6.00 m and mass M = 92.0 kg. The pivot under the le...

A: Click to see the answer

Q: Determine the energy required to accelerate an electron between each of the following speeds. (a) 0....

A: E=mec211-vf2c2-11-vi2c2=0.511 MeV11-0.890c2c2-11-0.500c2c2=0.511 MeV2.19-1.15=0.531 MeV

Q: Can i get help with these questions

A: The mass of the steel hull, m = 29000 kg The density of the hull (steel), ρhull = 7860 kg/m3 The den...

Q: A very large, superconducting solenoid such as one used in MRI scans, stores 1.00 MJ of energy in it...

A: Given Data: Stored energy = E = 1.00 MJ = 1 × 106 J Current = I = 100 A Self inductance = ? The ener...

Q: Number 2 please and explain how you got the answer Thankyou

A: Given : Radius of stream = 80% radius of hole

Q: A bicycle tire is spinning clockwise at 2.00 rad/s. During a time period Δt = 1.70 s, the tire is st...

A: Given: A bicycle tire is spinning clockwise initially at ωi=-2.00 rad/s (negative sign for spinning...

Q: 5. The equation for kinetic energy is KE=: ½ m•v. Solve for v, given KE and m.

A: Kinetic energy = (1/2)(m)(v)2 where m is the mass of object v is the speed of the object Now, kineti...

Q: If a piece of ice is dropped into a glass of juice heat flows from _

A: Heat always flow from a higher temperature body to a lower body temperature , until an equilibrium t...

Q: A physics major is cooking breakfast when he notices that the frictional force between the steel spa...

A: The frictional force between the steel spatula and the frying pan is f = 0.450 N. The coefficient of...

Q: The ground state energy of hydrogen atom is –13.6 eV. What are the kinetic and potential energies of...

A: We know that : Ground state energy of hydrogen atom, E = − 27.2 eV

Q: A stuntman whose mass is 70 kg swings from the end of a 4.0-m-long rope along the arc of a vertical ...

A: Given data: Mass (m) = 70 kg. Length of the rope (L) = 4.0 m (a) At the binging of the motion, the t...

Q: The motion of a jet plane just after landing on a runway is described by the a-t graph. Determine th...

A: Click to see the answer