Which statement correctly compares his motion during the first 10 minutes to his motion during the last 10 minutes?
a
He is speeding up during the first 10 minutes and slowing down during the last 10 minutes.
b
He is going faster and in a different direction during the first 10 minutes than in the last 10 minutes.
c
His acceleration increases during the first 10 minutes and decreases during the last 10 minutes.
d
He is going slower and in a different direction during the first 10 minutes than in the last 10 minutes.