A car of mass 1000 kg moving at 20 m/s collides with a 5000 kg truck at the initial velocity of 10 m/s. After the collision, the car continues in the same direction with a
velocity of 10 m/s. Neglecting friction, the velocity of the truck after the collision
is__m/s. (Round to the nearest tenth).

Aman tries to push a box of mass 4 kg with a force of 5 n but the box remains stationary if the coefficient of static friction is 0.45, what is the value of the maximum force of friction?

The energy released by a chemical reaction can be measured using a calorimeter. when barium hydroxide octahydrate crystals are reacted with dry ammonium chloride inside of a coffee cup calorimeter, the temperature of the 18.00 g of water in the calorimeter decreases from 30.0°c to 8.0°c. the equation for calculating energy absorbed or released by a reaction is: where q is the energy released or absorbed, m is the mass of water in the calorimeter, cp is the specific heat of water, and δt is the observed temperature change. if the specific heat of liquid water is 4.19 j/g·°c, how much energy was absorbed by the reaction?

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?