This question is about projectile motion. The barrel of a rifle is held at an angle 30° the above the horizontal. A bullet fired from the rifle leaves the barrel at time t=0 with a speed 200 m/s. The graph below shows the variation with time t of the vertical height h of the bullet. As shown, the bullet is in the air for 20 seconds.
a) What is the horizontal velocity of the bullet? b.) What is the initial vertical velocity of the bullet
c.) what is the vertical velocity of the bullet when it reaches maximum height
d.) what is the range of the bullet

Avoltage source vs = 10 v is in series with a resistor of 10 kohm. if the source transformation theorem is applied, what will the value of the current source be in ma ?

When temperature of a substance increases, of its particles increase resulting in more between particles. real world applications of thermal expansion absolute zero (-273 degrees c) is the lowest possible temperature on the kelvin scale. it is a measure of where a substance has no kinetic energy. heat is a process of the . energy flows spontaneously from a object to a until equilibrium is reached. heat is measured in heat is transferred throughis a method of heat transfer that occurs between particles of matter that are in direct contact with each other. are poor conductors that impede / reduce the rate of heat transfer. is a method of heat transfer that occurs in fluids (non-solids) by means of currents. real world application of convectiona method of heat transfer through electromagnetic waves. when energy moves from one object to another inside a closed system, no energy is or in the system in the transaction. systems will spontaneously move to a state of organized energy or high disorder over time called

The amount of potential energy possessed by an elevated object is equal to what?