A car accelerates from 20m/s to 30m/s in 10 sec. Find the cars acceleration using v=u+at

True or false graphs must include scales that increase by the same amount

Sound travels slower in colder air that it does in warmer air. make a claim about the effect of air temperature on the speed of sound. support your claim with evidence

With which of the following is the weak nuclear force associated? a.lightingb.nuclear decayc.ocean tidesd.stactic cling