Newton's Laws and Reaction Times

• Use Newton's first law to explain the motion of objects travelling at uniform velocity, as well as objects whose speed and/or direction is changing.
• Explain, using examples, that an object in a circular orbit moves at constant speed while its velocity changes (qualitative only).
• Explain that inertial mass measures how hard it is to change an object's velocity, and that it is defined as force divided by acceleration.
• Recall and apply Newton's second law, which links force to mass and acceleration:

$F = m \times a$