Let a be the set of all binary strings of length four. Define a function that maps A to the set {0,1,2,3,4} by leggting f(s) be what you get when you add up the digits making up the string s.

constant acceleration- a

constant velocity- c

no velocity or acceleration- b

explanation:

for body moving with a constant acceleration, the rate of change of displacement changes over time. this is proven by the increasing gradient of the curve (a) against time.

a body that is moving at constant velocity covers equal distances over equal periods of time, thus the straight line with a constant gradient c.

a stationary body   covers no displacement as time elapses. thus the flat line with   zero gradient.

341

step-by-step explanation:

all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.

77

step-by-step explanation:

jwjeh; hw; kjhekjhkjhwkejhkw

step-by-step explanation: