Question

1)When a 10-kg crate is pushed across a frictionless horizontal floor with a force of 14 N, directed 25° below the horizontal, the magnitude of the normal force of the floor on the crate is (g = 10 m/s2):


2)A constant force of 2.8 N is exerted for 9.0 s on a 6.1-kg object initially at rest. The change in speed of this object will be:

3)When a certain force is applied to the 1-kg standard mass its acceleration is 5.3 m/s2. When the same force is applied to another object its acceleration is one-fifth as much. The mass of the object is:


4) Two forces are applied to a 7.6-kg crate; one is 8.5 N to the north and the other is 7.8 N to the west. The magnitude of the acceleration of the crate is:

Answer 1

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Answer 2

pls help me