Tuesday, January 17, 2012

Probability and Science Questions

Probability

A die is thrown 6 times. If getting an odd number is considered a success, what is the probability of at most 5 successes?
Science An object moving at constant velocity, in the absence of external forces
a. can change its direction but not its speed of motion
b. can not change its speed nor direction of motion
c. can change both its speed and its direction of motion
d. can change its speed but not its direction of motion
e. can change its direction at the expense of its speed

Ignore air resistance effects. A ball is thrown straight up into the air at 5 m/s. At the highest point in its trajectory,
a. velocity is zero
b. velocity is constant
c. acceleration decreases
d. acceleration is zero
e. acceleration increases