What is the mass of the skateboard

Reference no: EM13336258

A student m = 81 kg runs at a velocity vi = 2.25 m/s before jumping on a skateboard. After jumping on the board the student has a velocity vf = 1.75 m/s.

a) Write an expression for the weight of the skateboard W.

b) What is the mass of the skateboard in kg?

c) The student soon loses his balance and falls backwards off the board at a velocity of 4 m/s. What is the skateboards new velocity in m/s?

Reference no: EM13336258

Questions Cloud

Find frequency is the trombonist producing : You bike at 10.3 m/s directly away from your neighbor\'s trumpet sound and toward the sound of another neighbor\'s trombone, What frequency is the trombonist producing

Explain what kinetic energy must the electrons have in order : What kinetic energy must the electrons have in order to resolve a protein molecule that is 4.60 nm in diameter. Take the mass of an electron to be 9.11× 10-31 kg.

Detail the functional requirements for the system : An operation specification for the most important single interaction between user and system during the critical core use case's normal flow.

Prepare the journal entries required at december 31 : Prepare the journal entries required at December 31, 2012, and December 31, 2013, assuming that the inventory is recorded at lower-of-cost-or-market, and a perpetual inventory system.

What is the mass of the skateboard : A student m = 81 kg runs at a velocity vi = 2.25 m/s before jumping on a skateboard. After jumping on the board the student has a velocity vf = 1.75 m/s. What is the mass of the skateboard in kg

Use case diagram for the functional requirements : Analyse the Case Study documents and produce an initial high level functional requirements specification. Document these requirements with.

Find what will be the internal growth rate of net profit : It decides to distribute 6.5 million to its shareholders as dividends and uses the retained earnings to open new stores. The return on investment for the shareholders is expected to be 14%.

Define the same wavelength as a photon of green light : What would be the speed of the following particles if they had the same wavelength as a photon of green light ( = 500.0 nm)? Proton (mass = 1.673 × 10-24 g) Neutron (mass = 1.675 × 10-24 g) Electron (mass = 9.109 × 10-28 g) Alpha particle (mass = ..

Identifies all the stakeholders relevant to the system : Analyse the Case Study documents and produce a Vision document for a software system to meet the needs identified in the Case Study. Make sure your Vision document.

User Account

All Pages