A force can cause a change in the ____ of an object. The ____ of the object remains unchanged. Length is the ____ between two points. ____ and ____ can be used to measure length accurately. Some common units of length: millimetre, centimetre, metre, kilometre We use digital ____ to measure the time taken. Some common units of time: millisecond, second, minute, hour The speed of an object is the distance travelled by the object per unit time. We can calculate the speed of an object by taking the ____ divide by the ____. We can calculate the ____ speed by dividing the total distance travelled by the total time taken. When a force makes an object move faster, the object is said to ____. When a force makes an object move slower, the object is said to ____. Acceleration is the rate of change of ____. We can calculate the acceleration of an object by dividing the ____ by the time taken for this change. When we apply a force to push or pull on a door, it will turn about its hinges (pivot). This turning effect is called the ____ of a force. The larger the force applied, the ____ the turning effect.

Topic 4 Effects of Force

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