A 4.4 kg marble (really big heavy marble) is accelerating down an incline. When it reaches level ground it slows down to a stop in 1.27 seconds due to friction. A. If the deceleration of the marble on level ground was 1.74 m/s/s, how much frictional force was present?

B. Calculate the velocity of the marble when it initially reached level ground. ​

#A

Mass=4.4kg

acceleration=-1.74m/s^2

Use newtons second law

#B

initial velocity=u

Final velocity=v=0

Acceleration=a=-1.74m/s^2

Time=t=1.27s

54 degrees incident angle = reflected angle

angle is from normal turned to line of ray

the answer is false. this is because for ice to melt, it requires latent heat of melting. latent heat means heat energy required to change phase without any increase in temperatures. therefore, the ice will take energy from the environment to melt hence atmospheric temperatures will reduce.