An accelerating object has an initial speed of u=(12.4 +-0.1)^-1and a final speed of v=(28.8 +-0.2)ms-1. The time interval for this change in speed is t=(4.2 +-0.1)s. Acceleration is defined as a=(v-u)/t. Calculate the acceleration and its uncertainty.

(01.02 mc) nicole pushes her bike up a hill. overhead, the sun exerts a gravitational force on earth. which statement is true about the bike and earth? they both experience contact forces. they both experience non-contact forces. the bike experiences a non-contact force and earth experiences a contact force. the bike experiences a contact force and earth experiences a non-contact force. they both experience non-contact forces.

What is the average speed of a car that travels 40mph for 1 hour and 60 mph in another hour will mark brainliest

Inside of a windmill or a dam is a that is used to transform one type of energy into electrical energy. a. motor b. generator c. transformer d. power pack