Ineed the answer asap plz a child rides her bike at a rate of 12.0 km/hr down the street. a squirrel suddenly runs in front of her so she applies the brakes and slows to 8.0 km/hr in 0.25 sec. what is the acceleration of the bike rider during this period? 1.0 km/hr/sec -1.0 km/hr/sec 16 km/hr/sec -16 km/hr/sec

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

Find v(t), given acceleration a(t)=7j and initial velocity v(0)=k

The speed of sound in ice, water, and steam is shown. what best explains the speed of sound in different states of matter? sound travels fastest in ice because energy is easier to transfer when the molecules are close together. sound travels slowest in steam because the sound has to move around the gas molecules that are far apart. sound travels fastest in ice because the temperature of solids is always greater, so the heat transfers the sound energy. sound travels slowest in steam because the pressure is so great the sound cannot travel though the steam particles.