Question

50 km/hr = ___ m/s 14.3 m/s = ___ cm/s 5000 m/s = ___ km/hr 110 cm/s = ___ m/s Solve for the following dimensional analysis. Area times distance = Energy times Acceleration = Distance times velocity = Distance times volume = Area divided by distance Velocity divided by acceleration = Energy divided by acceleration = Answer the following questions by showing your work. What is the percent difference between accepted value of gravity of 9.81 m/s^2 and the experimental value of 9.76 m/s^2? What is the standard deviation of the following sets of data points? (9.65, 9.89, 9.7, 9.81, 9.69) What is the standard deviation of the following values; 1.608, 1.648, 1.61, 1.635, 1.615? What is the percent difference between accepted value of gravity of 1.61 m/s^2 and the experimental value of 1.68m/s^2

Answer 1

4)

a) Area time distance

A = m^2 and d = m

A x d = m^2 x m = m^3 (Area time distance is Volume)

b)Energy time acceleration:

Energy = J and acc = m/s^2

E x a = J m/s^2

c)distance times velocity

distance = m and velcoty = m/s

d x v = m^2/s

d)distance times volume

distance = m ; volume = m^3

d x v = m^4

e)Area / distance

Area = m^2 ; distance = m

Area/dist = m^2/m = m

f)Velocity/acc

Velocity = m/s and acc = m/s^2

v/a = m/s / m/s^2 = s (its time)

g)Energy divided by acc

Energy is J = N m = kg m/s^2 x m; acc = m/s^2

E/acc = kg-m/s^2 x m / m/s^2 = kg-m

energy/acc = kg/m