Immediately after the collision, a constant braking force of magnitude 250 N is applied to C.

BBC: Colleges despair at exam board 'error'

The pull in different directions towards your family and towards a job you love will be constant and will force you to make tough decisions.

FORBES: Daily Candy and a Newborn: The Balancing Act Has Begun

Payroll employment rose significantly in March, and the unemployment rate remained constant despite a substantial increase in the labor force.

WHITEHOUSE: The White House

The force of gravity is a "basic physical constant, " Mr. Minsky, 85, explains.

WSJ: Looking for Something Useful to Do With Your Time? Don't Try This

This constant rotation will mean that troops from many countries will have to meet the stringent standards set for the new force.

BBC: NEWS | Europe | Nato's force for change

Marshall's trickery was a constant threat to a fragile Wednesday defence in the second half, and when he combined expertly with Madine to force a corner, Michalik was on hand to thunder in a volley from inside the penalty area.

BBC: Sport - Football - Carlisle 3-1 Sheff Wed