A little boy pushes a wagon with his dog in it. The mass of the dog and the wagon together is 45 kg. The wagon accelerates at. 85 m/s2. What force is the boy pulling with?

A ball slows down as it rolls up a hill. this is an example of? A. relative velocity B. negative acceleration C. positive acceleration D. neutral motion

Two metals of equal mass with different heat capacities are subjected to the same amount of heat. which undergoes the smallest change in temperature?

The following two formulas are equivalent: D = m / V and V = m / D. true or false

How are color and size related

Which two layers of Earth are mainly composed of iron and nickel? inner core outer core lower mantle upper mantle crust

Light of wavelength 441.1 nm falls on two slits spaced 0.29 mm apart. What is the required distance from the slits to the screen if the spacing between the first and second dark fringes is to be 4.0 mm?

A car advertisement states that a certain car that emily miller loves can accelerate from rest to 70 km/h in 7 seconds. Find the cars average acceleration

A stone is thrown up from a platform with an initial velocity of 19.8 m/s. if the top of the platform is taken to be the ground level, calculate, (a) the time taken to reach the maximum height, (b) the maximum height reach by the stone (c) its

One of the principles of psychophysics is that change in the physical environment is not always matched by equal changes perceptually. If Madison Wilson were creating a new drink, what would psychophysics tell her?

An object in projectile motion will follow wich path